 | Daniel Barnard Hagar - Algebra - 1873 - 278 pages
...is ioOOO, etc. 2. The square of any number expressed by more than one order of figures consists of the square of the tens, plus twice the product of...the tens by the units, plus the square of the units. For any number expressed by more than one order of figures may be regarded as an algebraic polynomial,... | |
 | Elias Loomis - Algebra - 1873 - 396 pages
...841 " 800+40+1. If, then, 841 is the square of a number composed of tens and units, it must contain the square of the tens, plus twice the product of...the tens by the units, plus the square of the units. But these three terms are blended together in 841, and hence arises the peculiar difficulty in determining... | |
 | Emerson Elbridge White - Arithmetic - 1870 - 348 pages
...shown that the square of any number, composed of tens and units, is equal to The square of the t&ns. plus twice the product of the tens by the units, plus the square of the units. 33. What is the square of 45? f402 =1600 PROCESS: 452 = ) = 400 ( 2025, Afts. 34. What is the square... | |
 | Charles Davies - Arithmetic - 1874 - 346 pages
...hundreds' place, and subtract , this takes _ away the square of the tens, and leaves 3'JG, 66)396 which is twice the product of the tens by the units plus the square of the units. If now, we double the divisor and then divide this remainder, exclusive of the right hand figure, (since... | |
 | George Payn Quackenbos - Arithmetic - 1874 - 444 pages
...ordinary way, we deduce the following law : — The square of a number composed of tens and units, equals the square of the tens, plus twice the product of the tens and units, plus the square of the units. The diagram in the margin will illustrate this law of numbers,... | |
 | William Guy Peck - Algebra - 1875 - 348 pages
...root, and y the units; then will that is, the number is equal to the square of the tens in its root, plus twice the product of the tens by the units, plus the square of the units. We first find the tens of the root. Since the square of tens can contain no significant figure less... | |
 | William Guy Peck - Algebra - 1875 - 348 pages
...point. If we subtract the square of the tens from the given number, the remainder will be equal to twice the product of the tens by the units, plus the square of the units. Consequently, if we divide the remainder by twice the tens, the quotient will give the units, or a... | |
 | Benjamin Greenleaf - 1875 - 196 pages
...square of 75 ? Of 85 ? 8. What is the square of 32 ? NOTE. — The square of any number is equal to the square of the tens, plus twice the product of the tens Ъу the units, plus the square of the units. Thus, 32 is 3 tens and 2 units ; 3 tens, or 30, squared... | |
 | Stoddard A. Felter, Samuel Ashbel Farrand - Arithmetic - 1877 - 496 pages
...«'- : hence we have the following FORMULA. — The square of a number expressed by two figures equals the square of the tens, plus twice the product of...the tens by the units, plus the square of the units ; or, (t + «)2 = i2 + 2 tu + M2. WRITTEN EXEIiCISES. PROBLEM. — Write the square of 85. PKOCESS.... | |
 | William Guy Peck - Arithmetic - 1877 - 430 pages
...the following principle of algebra : The square of a number composed of tens and units is equal to the square of the tens, plus twice the product of...the tens by the units, plus the square of the units. ROOTS. This may be illustrated geometrically. For, let A be a square, each of whose sides is equal... | |
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Which proves that the square of a number composed of tens and units contains, the square of the tens plus twice the product of the tens by the units, plus the square of the units. 
