Question

factories 4x² - 16x - 9
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Answer 1

Answer:

Using the method:- splitting the middle term!

4x^2-16x-9

4x^2-18x+2x-9

2x(2x-9)+1(2x-9)

(2x-9)(2x+1)......Ans.

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Answer 2

4x square - 16x - 9 = 0

4x square - ( 18 - 2 ) x - 9 = 0

4x square - 18x + 2x - 9 = 0

2x ( 2x - 9 ) + 1 ( 2x - 9 ) = 0

( 2x - 9 ) ( 2x + 1 ) =0

X = 9/2 or -1/2