数学テスト

Factoring (easy)

xy5–xy=xy(xy4–1)
a5+5a+4a+20 = a(a+5)+4(a+5) = (a+4)(a+5)

Factorization

Factorization or factoring means writing a number or algebraic expression as a product of several factors, e.g.:

$$ax+bx=x(a+b)$$

To do the factorization, you need to find the greatest common factor, e.g.:

$$2x+6xy−8x^2=2x(1+3y−4x)$$

Also:

$$7x^2+7x+3x+3=7x(x+1)+3(x+1)=$$
$$=(7x+3)(x+1)$$

   
   

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