Question

X square - 4 x minus 21 factorization x square - 4 x minus 21

Answer 1

Answer:

here is the solution for ur ques

Answer 2

Answer:

x = 7 or - 3

Step-by-step explanation:

x^2 - 4x - 21 = 0

x^2 - 7x + 3x -21 = 0

x(x-7) + 3(x-7) = 0

(x-7) (x+3) = 0

x = 7 or x = - 3

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