If a = b = -7, then the value of (a - b) (2a2 +4ab+ 9b2) please say the ans
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ANSWER : -
∴
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Step-by-step explanation:
ANSWER : -
a = b = -7a=b=−7
∴(a-b)(2a^2+4ab+9b^2)(a−b)(2a2+4ab+9b2)
= (a-a)(2a^2+4a^2+9a^2)=(a−a)(2a2+4a2+9a2)
\begin{gathered}= 0(15a^2)\\\end{gathered}=0(15a2)
= 0=0
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