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MrRissso [65]
3 years ago
6

Solve the following and check for extraneous solutions √4x + 8= x+ 3

Mathematics
1 answer:
lesya692 [45]3 years ago
4 0

Answer:

X=-5

Step-by-step explanation:

√4x+8=x+3

Simplifies to:

2x+8=x+3

Let's solve your equation step-by-step.

2x+8=x+3

Step 1: Subtract x from both sides.

2x+8−x=x+3−x

x+8=3

Step 2: Subtract 8 from both sides.

x+8−8=3−8

x=−5

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Answer:

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3 years ago
Find the zeros of y= x - 4x - 9 by completing the square.
Paraphin [41]

The zeros for the given equation are A. x = {2 \pm \sqrt{13}}.

Step-by-step explanation:

Step 1:

To solve for x in a polynomial equation, we use the formula

x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}.

Here a is the coefficient of x^{2}, b is the coefficient of x and c is the coefficient of the constant term.

In the given equation, a = 1, b = -4, c = -9.

Step 2:

Substituting the values of a, b, and c in the equation, we get

x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a} =\frac{-(-4) \pm \sqrt{(-4)^{2}-4 (1)(-9)}}{2 (1)} = \frac{4 \pm \sqrt{(16+36}}{2 }.

\frac{4 \pm \sqrt{(16+36}}{2 } = \frac{4 \pm \sqrt{(52}}{2 } = \frac{4 \pm2 \sqrt{(13}}{2 }= {2 \pm \sqrt{13}}.

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3 0
4 years ago
1. Shenice bought 3 equally priced books and
Colt1911 [192]

Answer:

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Step-by-step explanation:

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Answer:

Volume of cone = 40 in³

Step-by-step explanation:

Given:

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Radius of cylinder = Radius of cone

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Computation:

Volume of cylinder = πr²h = 120 in³

Volume of cone = (1/3)πr²h

So,

Volume of cone = (1/3)(120)

Volume of cone = 40 in³

3 0
4 years ago
Express as a trinominal.<br><br> (2x+6)(2x+8)
antoniya [11.8K]

Answer:

4x^2 + 28x + 48

hope this helps

have a good day :)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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