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Liula [17]
3 years ago
7

Use suitable identity to find the product of (7 – 2y) (7 +2y).

Mathematics
1 answer:
AVprozaik [17]3 years ago
6 0
<h3>Solution :</h3>

\tt (7 - 2y) (7 +2y)

<u>By using identinty</u> :

\large \underline{\boxed{\bf{(a-b)(a+b) = a^2 - b^2}}}

\tt : \implies (7 - 2y) (7 +2y) = (7)^{2} - (2y)^{2}

\tt : \implies (7 - 2y) (7 +2y) = 49 - 4y^{2}

\large \underline{\boxed{\bf{(7 - 2y) (7 +2y) = 49 - 4y^{2}}}}

Hence, value of (7 - 2y) (7 +2y) is 49 - 4y².

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