Question

4x^2-9x-100 please solve it fast​

Answer 1

4x^2+16x-25x-100

4x(x+4)-25(x+4)

(x+4)(4x-25)

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Answer 2

4x^2-(25-16)x-100

4x^2-25x+16x-100

x(4x-25)+4(4x-25)

(x+4)(4x-25)