How much greater is #(-20x^2 + 13x - 4)# than #(11x^2 - 13x - 10)#?

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Answer 1 · 2018-05-16T21:44:29

#=-31x^2+26x+6#

Consider the question. How much is #20# greater than #16?#

We would do #20-16 =4#

In the same way.....

How much greater is #(-20x^2 + 13x - 4)# than #(11x^2 - 13x - 10)# will be done as a subtraction.

#rarr(-20x^2 + 13x - 4) -(11x^2 - 13x - 10)#

#= -20x^2 + 13x - 4 -11x^2 + 13x + 10" "larr# notice the signs

#=-31x^2+26x+6#