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4 years ago

Can someone please help with this ?

Mathematics

1 answer:

Fittoniya [83]4 years ago

6 0

Answer:

Step-by-step explanation:

If we are to find f(x) + g(x) that we means that we are to add the functions together by combining like terms, if any, and put it all together into one function. Adding them looks like this:

$-3x+7+2x^2-8$ and combining like terms gives us

$2x^2-3x-1$

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Help is required, I am stuck

Natalija [7]

Answer:

see explanation

Step-by-step explanation:

Given

x² + 4x - 7 = 0 ( add 7 to both sides )

x² + 4x = 7

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(2)x + 4 = 7 + 4

(x + 2)² = 11 ( take the square root of both sides )

x + 2 = ± $\sqrt{11}$ ( subtract 2 from both sides )

x = - 2 ± $\sqrt{11}$

Thus

x = - 2 - $\sqrt{11}$ ≈ - 5.32 ( to 2 dec. places )

x = - 2 + $\sqrt{11}$ ≈ 1.32 ( to 2 dec. places )

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago

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nirvana33 [79]

Answer:

Addition and Subtraction with different denominators. If the denominators are different then a common denominator needs to be found.

2 pages.

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4 0

2 years ago

Question ❓:-<br>4^(x+2)+2^(2x+1)-36=0,x=?

sergiy2304 [10]

Answer:

x = 1/2

Step-by-step explanation:

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$16*4^x+2*2^{2x}-36=0$
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3 years ago

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melamori03 [73]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers