Question

Using identity simplify
( 2x + 5x) (2x - 5y)
With explanation please
Thank you

Answer 1

Answer:

it's a square - b square's identity

Answer 2

$\huge\boxed{Answer}$

$~~~~~~~~~~~~~(2x + 5y) (2x - 5y)$

We can solve this by using ;

${\green{\overline{\green{\underline{\blue{\boxed{\orange{\mathtt{(a + b) (a - b) = a² - b²}}}}}}}}}$

:⇢$(2x + 5y)(2x - 5y)$

:⇢$(2x)^{2} - (5y)^{2}$

:⇢$4x² - 25y²$

➣$\boxed{(2x + 5y) (2x - 5y) = 4x² - 25y²}$

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MORE INFORMATION;

$\boxed{(a + b)² = a² + 2ab + b²}$

$\boxed{(a - b)² = a² - 2ab + b²}$

$\boxed{a² – b² = (a + b)(a – b)}$

$\boxed{(x + a)(x + b) = x² + (a + b)x + ab}$

$\boxed{(a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ca}$

$\boxed{(a + b)³ = a³ + b³ + 3ab (a + b)}$

$\boxed{(a – b)³ = a³ – b³ – 3ab (a – b)}$

$\boxed{a³ + b³ + c³ – 3abc = (a + b + c)(a² + b² + c² – ab – bc – ca)}$