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3 years ago

Find the solutions to the equation below check all that apply

Mathematics

1 answer:

Ivahew [28]3 years ago

5 0

9x^2-81=0

add 81 to each side

9x^2 = 81

divide by 9

x^2 =9

take the square root of each side

x = + - sqrt (9)

x=+3,-3

Choices D,E

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Answer:

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Step-by-step explanation:

Remember, when you divide fractions you have to multiply by the reciprocal

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3 years ago

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Answer:

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4 years ago

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3 years ago

Explain how you know that 7x is less than 7x has no solution.

Lemur [1.5K]

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3 years ago

Use synthetic division and the remainder theorem to find P(–1) if P(x) = 2x3+3x2-x–3.

GREYUIT [131]

Answer:

<h3>The value of P(-1) is -1</h3><h3>∴ P(-1)=-1</h3>

Step-by-step explanation:

Given polynomial is $P(x)=2x3+3x2-x-3$

<h3>To solve the given polynomial by using synthetic division and the remainder theorem to find P(–1):</h3>

By using the Synthetic division and remainder theorem we can solve it.

From the given P(-1) we can write it as

-1_| 2 3 -1 -3

0 -2 -1 2

_________________

2 1 -2 -1

Hence we get the remainder -1

<h3>The value of P(-1) is -1</h3><h3>∴ P(-1)=-1</h3>

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3 years ago