2 years ago

From y² + 5 y - 7, subtract y² - 3 y - 4

1 answer:

3 0

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Evgesh-ka [11]

I think the answer is A but I am not sure. I think you would take the opposite of the y axis.

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3 years ago

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Help plss !! Will give branliest to who ever has the best answer

ozzi

Answer:

a c and e hope it helps :D

Step-by-step explanation:

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2 years ago

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What is the set of all solutions to the equation \sqrt{x + 2}= {-x} x+2 =−xsquare root of, x, plus, 2, end square root, equals

NARA [144]

Answer:

$x = 2$ or $x = -1$

Step-by-step explanation:

Given

$\sqrt{x + 2}= {-x}$

Required

Find the possible values fo x

$\sqrt{x + 2}= {-x}$

Square both sides

$( \sqrt{x + 2})^2= ({-x})^2$

$x + 2 = x^2$

Equate to 0

$x^2 - x - 2 = 0$

Expand

$x^2 + x -2x - 2 = 0$

Factorize:

$x(x + 1) - 2(x + 1) = 0$

$(x -2)(x +1) = 0$

Split:

$x - 2 = 0$ or $x + 1 = 0$

$x = 2 + 0$ or $x = 0-1$

$x = 2$ or $x = -1$

3 0

2 years ago

For what value of "a" will the product shown below have a purely imaginary value? (Show work please)

MakcuM [25]

If you expand out the brackets you get this,

(4+5i)(a+2i) = 4a + (5a)i + 8i - 10

The -10 comes from 5i * 2i.
Squaring i becomes -1.

Let's group the real stuff together,
and imaginary separately,

(4a - 10) + (5a + 8)i

For this to be purely imaginary,
the real part needs to be zero.

Therefore 4a - 10 = 0

Solve for a.

5 0

3 years ago

What is the next term of the geometric sequence?<br> 2,6,18,

DedPeter [7]

Answer:

Step-by-step explanation:

keep multiplying by 3

4 0

3 years ago

From y² + 5 y - 7, subtract y² - 3 y - 4​

From y² + 5 y - 7, subtract y² - 3 y - 4