To square the expression (-8x^9)^2, we need to multiply the expression by itself.
(-8x^9)^2 = (-8x^9)(-8x^9)
When we multiply two negative numbers, the result is positive, so we can remove the negative signs.
(-8x^9)(-8x^9) = (8x^9)(8x^9)
To multiply the variables with the same base, we add their exponents:
(8x^9)(8x^9) = (8*8)(x^9*x^9) = 64x^(9+9) = 64x^18
Therefore, (-8x^9)^2 = 64x^18.
(-8x^9)^2
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