1. (4x2 - 9x + 7) + (x2 + 5x - 1)-(5x2 - 4x +5) = how much?
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YOUR QUESTION:
(4x^2-9+7)+(x^2+5x-1)-(5x^2-4x+5)=?
ANSWER:
9x-8
Step-by-step explanation:
(4x^2-9+7)+(x^2+5x-1)-(5x^2-4x+5)=?
=>4x^2-9+7+x^2+5x-1-5x^2+4x-5
Bring common terms on one side,
(then it will be easy to solve the problem)
=>(4x^2+x^2-5x^2)(+5x+4x)(-9+7-1-5)
=>(5x^2-5x^2)(+9x)(-8)
(+5x^2-5x^2)common opposite signs will cancel
=>(+9x)(-8)
=>9x-8
HOPE THIS ANSWER WILL HELP YOU TO PREPARE
ALL THE BEST
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