WAEC - Mathematics (1990 - No. 19)

Factorize x\(^2\) + 4x - 192
(x-4) (x+48)
(x-48) (x+4)
(x-12) (x+16)
(x-12) (x-16)
(x+12) (x+16)

Explanation

x\(^2\) + 4x - 192

x\(^2\) + 16x - 12x - 192

x(x + 16) - 12(x + 16)

(x + 16)(x - 12)

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