An Introduction to Algebra: Being the First Part of a Course of Mathematics, Adapted to the Method of Instruction in the American Colleges

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Durrie & Peck, 1846 - Algebra - 332 pages
 

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Page 59 - Multiply the numerators together for a new numerator, and the denominators together for a new denominator.
Page 33 - We have seen that multiplying by a whole number, is taking the multiplicand as many times as there are units in the multiplier.
Page 165 - To divide the number 90 into four such parts, that if the first be increased by 2, the second diminished by 2, the third multiplied...
Page 190 - It may undergo any change which will not affect the equality of the ratios ; or which will leave the product of the means equal to the product of the extremes.
Page 72 - If four magnitudes are in proportion, the product of the two extremes is equal to the product of the two means.
Page 53 - Multiply each numerator into all the denominators except its own for a new numerator ; and all the denominators together, for a common denominator.
Page 49 - The value of a fraction, is the quotient of the numerator divided by the denominator.
Page 124 - ... the product of the two, plus the square of the second. In the third case, we have (a + b) (a — 6) = a2 — b2. (3) That is, the product of the sum and difference of two quantities is equal to the difference of their squares.
Page 295 - The operation consists in repeating the multiplicand as many times as there are units in the multiplier.
Page 154 - FIND THE VALUE OF ONE OF THE UNKNOWN QUANTITIES IN EACH OF THE EQUATIONS, AND FORM A NEW EQUATION BY MAKING ONE OF THESE VALUES EQUAL TO THE OTHER.

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