Question

(5x^2+7x-9)+(-3x^2-6x+8)​

Answer 1

Ответ: 2х²+х-1

Объяснение:

(5х²+7х-9)+(-3х²-6х+8)=

5х²+7х-9-3х²-6х+8=2х²+х-1

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Answer 2

To simplify the expression $(5x^2 + 7x - 9) + (-3x^2 - 6x + 8)$, you can combine the like terms:

First, add the terms with the same exponent $x^2$:

$5x^2 + (-3x^2) = 2x^2$

Next, add the terms with the same exponent $x$:

$7x + (-6x) = 1x = x$

Finally, add the constant terms:

$-9 + 8 = -1$

Putting it all together, the simplified expression is $2x^2 + x - 1$.