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Earn +20 ptsQ: Factor x squared - 4x - 21?
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X squared - 4x - 21?
-17
How do you factor x squared - 11x equals -10?
21
Factor x squared minus 2x?
x(x - 2)
How do you factor 4x squared - 16?
(2x + 4)(2x - 4) to check your answer, use the FOIL method (first, outside, inside, last) F.... 2x x 2x = 4x^2 0.... 2x x -4 = -8x I..... 2x x 4 = 8x L.... 4 x -4 = -16 so 4x^2 - 16 = (2x + 4)(2x - 4)
How do you factor 4x plus 20?
First, factor out the coefficient of x (in this case, 4) 4x+20----> 4(x+20/4) --> 4(x+5) then, go make yourself a sandwich.
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