How do you subtract #(8x^2 + 5) − (3x^2 − x + 7)#?

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Answer 1 · 2018-04-05T13:45:38

#5x^2+x-2#

Distribute the negative sign through the second term, yielding

#8x^2+5-3x^2-(-x)-7#

Subtracting a negative is the same as adding a positive.

#8x^2+5-3x^2+x-7#

Combine like terms.

#8x^2-3x^2+x+5-7#

#5x^2+x-2#