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3 years ago

What is the simplified form of this expression? (-3x2 + 2x − 4) + (4x2 + 5x + 9)

Mathematics

2 answers:

olga2289 [7]3 years ago

3 0

Answer:

I hope it helps you......

olya-2409 [2.1K]3 years ago

3 0

Answer:

$\large \boxed{\sf \ \ x^2 + 7x + 5 \ \ }$

Step-by-step explanation:

$\mathrm{\sf (-3x^2 + 2x -4) + (4x^2 + 5x + 9)}$

Remove brackets.

$\large{\sf -3x^2 + 2x -4 + 4x^2 + 5x + 9}$

Group like terms.

$\large{\sf -3x^2 + 4x^2 + 2x + 5x + 9 -4}$

Combine like terms.

$\large{\sf x^2 + 7x + 5}$

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2 years ago

Factor completely 5ab(x + 6) − 4(x + 6).

konstantin123 [22]

It seems like you've begun to apply the grouping method.

Because the two binomials in the parentheses are the same, we can rewrite this as

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(x+6) cannot be further factored. (5ab-4) cannot be further factored either.

Final answer: (5ab-4)(x+6)

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