Factor 9x3 + 18x2 x 2.
Answer(s): C
9x3 + 18x2 x 2 = 9x2 (x + 2) 1(x + 2) = (9x2 1)(x + 2)
Solve for x: 5x + 7 = 6(x 2) 4(2x 3)
Answer(s): B
5x + 7 = 6(x 2) 4(2x 3)5x + 7 = 6x 12 8x + 125x + 7 = 2x7x + 7 = 07x = 77/7x = 7/7x = 1
x × x2 = __________.
Answer(s): D
If two powers have the same base, they can be multiplied by keeping the base and adding the exponents together. In this case, x is the same as x1.
(5 + x)2 = __________.
This is so easy that it may tempt you to think that the correct answer is too obvious.The square root of (5 + x)2 is simply 5 + x.
(3 × 3)(5 3)(6 + 2) = x2.What's the value of x?
First solve the left side of the equation: (9)(2)(8) = 144. So x2 = 144. Find the square root of each side: x = 12.
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