Question

From the sum of 2x2–5x + 4 and –7x2–8x + 6 subtract 3x 2–10x + 9.

Answer 1

Step-by-step explanation:

i) (2x^2-5x+4) + (-7x^2-8x+6) = [-5x^2-13x+10]

ii) (-5x^2-13x+10) - (3x^2-10x+9)

ii) (-5x^2-13x+10) + (-3x^2+10x-9)

answer: -8x^2-3x+1