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3 years ago

What is the sum of the polynomials?

Mathematics

2 answers:

ipn [44]3 years ago

8 0

Answer: Last option is correct.

Step-by-step explanation:

Since we have given that

$7x^3-4x^2+2x^3-4x^2$

We need to find the sum of the polynomials:

So, we first collect the like terms:

$7x^3-4x^2+2x^3-4x^2\\\\=7x^3+2x^3-4x^2-4x^2\\\\=9x^3-8x^2$

Hence, the sum of polynomials is $9x^3-8x^2$

Therefore, Last option is correct.

lubasha [3.4K]3 years ago

6 0

9x^3 - 8x^2 is the answer. to solve this you must distribute the sign across each parenthetical and then add the like terms (all cubed x variables added to cubed variables and all squared x variables added to squared variable)

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Step-by-step explanation:

Notice that $\triangle CDB$ is a right triangle where its hypotenuse is $\overline{CB}$ . We can also see that $a = CB$ . For this we must use the Pythagorean Theorem.

Recall:

The Pythagorean Theorem states that if you have a right triangle, the principal square root of the sum of the squares of each leg is the length the hypotenuse.

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Given: AE ≅ CE ; DE ≅ BE Prove: ABCD is a parallelogram. Parallelogram A B C D is shown. Diagonals are drawn from point A to poi

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Answer:

The proof is below

Step-by-step explanation:

Given a parallelogram ABCD. Diagonals AC and BD intersect at E. We have to prove that AE is congruent to CE and BE is congruent to DE i.e diagonals of a parallelogram bisect each other.

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