Question

7 + x2 - 18x = -25 factorising​

Answer 1

Answer:

x2 -18x +7 = -25

x2 -18x +32 =0

x2 -16x -2x + 32 =0

x(x-16) -2 (x-16) =0

(x-16) (x-2) =0

x-16 =0 , x-2 =0

x=16, x = 2

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