How do you add #(-3x + 7) + (-4x^2 + 3x + 2)#?

1 Answer
Don't Memorise
Dec 4, 2015

# =color(blue)(-4x^2 + 9#

Explanation:

#(-3x+7) + (-4x^2 +3x +2)#

We can add the two terms by first grouping like terms:

# =-4x^2 + color(blue)((-3x +3x)) + color(green)((7+2)#

# =-4x^2 + color(blue)(0)+ color(green)(9#

# =color(blue)(-4x^2 + 9#

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