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charle [14.2K]
3 years ago
11

Solve for x.

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
3 0
Hey there.. Lets solve this problem step by step

Given problem --> 5x² - 45 = 0

Step 1 - adding both sides by 45
5x² - 45 + 45 = 0 + 45
5x² = 45

Step 2 - dividing both sides by 5
\frac{5}{5} x^2 = \frac{45}{5}
x² = 9

Step 3 - taking square root on both sides to find the value of x
√x² = √9
x = 3 and -3

So correct option is D.

Hope this helps you.. :)
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