Math, asked by nancysolanki300, 1 month ago

Factorise:

A) X² -4X -21
B) X² -19X +78
C) X²+9x +18

Answers

Answered by Diyaticku

1

answer

x^2-7x+3x-21

X(x-7)+3(x-7)

(X+3)(x-7)

equating to 0

X=-3&X=7

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