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Mathematics
Darryl Miranda
12 April, 21:41
If a=5x^2+3x-7 and b=-3x^2-7x+5 find b-a
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Sydnee Frye
12 April, 22:27
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-8x^2-10x+12
Step-by-step explanation:
first set up the problem:
(-3x^2-7x+5) - (5x^2+3x-7)
Since you are subtracting you need to distribute the (-) sign:
(-3x^2-7x+5) (-5x^2-3x+7)
Now just combine like terms
-3x^2 + (-5x^2 = - 8x^2
(-7x + (-3x = - 10x
5+7 = 12
set answer in standard form:
-8x^2-10x+12
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