Simplify (4x^2 + 12x - 9) + (7x^2 - x + 3)

11x^2 + 11x - 6

Step-by-step explanation:

Remove the parenthesese.Add like terms, 4x^2 and 7x^2.After that, subtract x from 12x, that's 11x.then add -9 and 3, and that's -6.

Then you're left with 11x^2 + 11x - 6

I hope this helps!

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5\16 x 2\5 = 10/80simplify to 1/80