Mathematics: What is the factored form of the expression? 4x^2-81y^2

What is the factored form of the expression? 4x^2-81y^2

Ответ:

lberman2005p77lfi

14.03.2022

$4x {}^{2} - 81y {}^{2}$
Write the expressions 4 & 81 in exponential form with an exponent of 2.

$= 2 {}^{2} x {}^{2} - 9 {}^{2} y {}^{2}$
Multiply the terms with equal exponents by multiplying their bases.

$= (2x) {}^{2} - (9y) {}^{2}$
Using
$a {}^{2} - b {}^{2} = (a - b)(a + b)$
Factor the expression.

$= (2x - 9y) \times (2x + 9y)$

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Ответ:

lovelarissa

29.05.2021

Mathematics

No he is not correct because if u try standard algorithm with this is makes 1,229

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What is the factored form of the expression? 4x^2-81y^2

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