28-31x-5x^2 midterm split
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Answered by
7
28 - 31x - 5x^2
= - 1( 5x^2 + 31x - 28)
= - 1 [ 5x^2 + 35x - 4x - 28]
= - 1 [ 5x ( x +7) - 4(x +7)]
= - 1(x +7)(5x - 4)
= (x +7)(4 - 5x)
= - 1( 5x^2 + 31x - 28)
= - 1 [ 5x^2 + 35x - 4x - 28]
= - 1 [ 5x ( x +7) - 4(x +7)]
= - 1(x +7)(5x - 4)
= (x +7)(4 - 5x)
Answered by
15
28 - 31x - 5x²
-5x² - 31x + 28
-5x² - 35x + 4x + 28
-5x ( x + 7 ) + 4 ( x + 7 )
( x + 7 ) ( -5x + 4 ).
-5x² - 31x + 28
-5x² - 35x + 4x + 28
-5x ( x + 7 ) + 4 ( x + 7 )
( x + 7 ) ( -5x + 4 ).
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