Simplify.
(7x2+5x+8)−(3x2+2x+1)
answer options
A.4x2+7x+9
B.10x2+7x+9
C.4x2+3x+7
D.4x2−3x+7
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0
Answer:
C. 4x2 + 3x + 7
Step-by-step explanation:
7x2 + 5x + 8 -3x2 -2x -1 (sign change, when taking it out it from bracket ; the Number multiplied by minus sign , so become negative)
(7x2 -3x2) +(5x -2x) +(8 -1) (subtract the number from the degree it is matching otherwise leave it as it is)
=4x2 + 3x + 7
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