Q: Factor 16x3-24x2 plus 28x

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(4x + 7)(16x2 - 28x + 49)

is 28x squared? if it is, the answer would be, 3(2x+5)(4x+3).

9x2 - 28x + 20 = 9x2 - 18x - 10x + 20 = 9x(x - 2) - 10(x - 2) = (9x - 10)*(x - 2)

The sum is 28x

68 + 28x - 28 = 236 28x + 68 - 68 -28 + 28 = 236 - 68 + 28 28x = 196 x = 7

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(4x + 7)(16x2 - 28x + 49)

is 28x squared? if it is, the answer would be, 3(2x+5)(4x+3).

That depends on the - or + values of 28x and 980 which have not been given

9x2 - 28x + 20 = 9x2 - 18x - 10x + 20 = 9x(x - 2) - 10(x - 2) = (9x - 10)*(x - 2)

The sum is 28x

68 + 28x - 28 = 236 28x + 68 - 68 -28 + 28 = 236 - 68 + 28 28x = 196 x = 7

The GCF is 28.

-8

4x(x - 7)

.740