3 years ago

Which is a factor of 5xy − 40x − 15y + 120? A. 2 B. y − 8 C. x − 4 D. x + 6

1 answer:

5 0

Upon slight rearranging:

5xy-15y-40x+120, now factor 1st and 2nd pair of terms

5y(x-3)-40(x-3) which is equal to:

(5y-40)(x-3) if we factor the first parenthetical term as well

5(y-8)(x-3)

So (y-8) is a factor

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kykrilka [37]

<h3>I'll teach you how to solve 8x² = 15 - 14x</h3>

----------------------------------------------------

8x² = 15 - 14x

Add 14x to both sides:

8x^2 +14x =15-14x+14x

Simplify:

8x^2 +14x =15

Subtract 15 from both sides:

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Solve with the quadratic formula:

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x= $\frac{-14+ \sqrt{14^2-4*8(1-15)} }{2*8}$ = -5/2

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x= 3/4, x=-5/2

Your Answer Is x= 3/4, x=-5/2

plz mark me as brainliest :)

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