Z=8 because you have to get z by itself therefore you have to divide 8 on both sides leaving z to equal 8
You need x 20 to get to 10000, so do the same with 150 and get 3000, so it is 3000/10000
X2<span> - 25 = x</span>2<span> - 5</span>2<span> = (x - 5)(x + 5)
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Answer:

Step-by-step explanation:
Since it's a perfect square, we can simply use the formula:

Given the perfect square expression
. Apply perfect square formula:

Knowing laws of exponent is mandatory when it comes to algebra. Recall that:

Apply laws of exponent to simplify the terms or expression:

Since there are no like-terms to do operation with (these terms have different degrees so they are not considered to be like-terms.) Therefore, the final answer is:
