3 years ago

What are the solution(s) to the quadratic equation 9x2 = 4?

Mathematics

2 answers:

Digiron [165]3 years ago

8 0

X=2/3
..............................
x=-2/3
..............................

marta [7]3 years ago

7 0

9x^2 = 4
-4 both sides
9x^2-4 = 0
(3x-2)(3x+2)
x=2/3
x=-2/3

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Solve for x. 47x=2747x=27

Svetach [21]

Divide by the coefficient of x.
x = 27/47

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3 years ago

Circle the equivalent expressions<br> 6x+18-3x-9<br> 6x-3(3x-3)<br> -3(x-3)<br> -6x+3(3+3x)-6x

melamori03 [73]

Equivalent expressions are:

6x-3(3x-3)

-3(x-3)

-6x+3(3+3x)-6x

Step-by-step explanation:

We have to simplify each expression for comparison

Expression 1:

$6x+18-3x-9\\= 3x+9$

Expression 2:

$6x-3(3x-3)\\= 6x-9x+9\\= -3x+9$

Expression 3:

$-3(x-3)\\= -3x+9$

Expression 4:

$-6x+3(3+3x)-6x\\= -6x+9+9x-6x\\= -3x+9$

Hence,

Equivalent expressions are:

6x-3(3x-3)

-3(x-3)

-6x+3(3+3x)-6x

Keywords: Polynomials, expressions

Learn more about polynomials at:

#LearnwithBrainly

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3 years ago

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Mademuasel [1]

When x = 1, y = (5 - 3) / -2 = -1 , let x1 = 1 and y1 = -1
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y -(-1) = (3/2)(x - 1)

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3 years ago

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egoroff_w [7]

I believe x would equal to 30.

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What you do to one side, you must do to the other.

Hope I helped!

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klemol [59]

Answer: h=10

Solving Steps:
45 = 1/2h x (4+5)
45 = 1/2h x 9
45 = 9/2h
10 = h
h = 10

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3 years ago