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Mathematics
2 December, 22:36
Write as a polynomial: (12a^3-7x) (-12a^3-7x)
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Nicholas Mcguire
2 December, 22:46
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-144a^6 + 49x^2
Step-by-step explanation:
(12a^3 - 7x) (-12a^3 - 7x) =
Factor - 1 out of the second binomial.
= (12a^3 - 7x) (-1) (12a^3 + 7x)
= - (12a^3 - 7x) (12a^3 + 7x)
After the first negative sign, you have the product of a sum and a difference:
(a + b) (a - b) = a^2 - b^2
= - (144a^6 - 49x^2)
Now, distribute the negative sign.
= - 144a^6 + 49x^2
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