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HACTEHA [7]
3 years ago
5

4xsquared - 9=0? could anyone help me solve this quadratic equation by FACTORING?

Mathematics
1 answer:
Verizon [17]3 years ago
7 0
\bf \textit{difference of squares}
\\ \quad \\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)\\\\
-------------------------------\\\\
4x^2-9=0\implies 2^2x^2-3^2=0\implies (2x)^2-3^2=0
\\\\\\\
[(2x)-3][(2x)+3]=0\implies 
\begin{cases}
2x-3=0\\
2x=3\\
x=\frac{3}{2}\\
------\\
2x+3=0\\
2x=-3\\
x=-\frac{3}{2}
\end{cases}
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6/3=22/x (i really need help
Tpy6a [65]
Well, we can begin by simplifying.

6/3 equals 2, so we make the left side 2.

2 = 22/x

x is being divided by 22, so to undo it, we multiply.

therefore it becomes:

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we can divide by 2 on both sides.

we are left with


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hope this helps!
7 0
2 years ago
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Margarita [4]
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3 0
3 years ago
If Natalie walked 3/5 in 1/2 hour, how fast did she walk, in miles per hour?
melisa1 [442]
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6 0
3 years ago
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Elden [556K]

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B.60

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7 0
2 years ago
Read 2 more answers
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bezimeni [28]

Answer:

1/15

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The total probability is (3/10) (2/9) = 1/15.

5 0
2 years ago
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