Question

( x + 6) (x - 6) evaluate using Identity​

Answer 1

$\sf \: <strong><u>\</u></strong><strong><u>h</u></strong><strong><u>u</u></strong><strong><u>g</u></strong><strong><u>e</u></strong><strong><u> </u></strong><strong><u>Answer</u></strong><strong><u>:</u></strong><strong><u> </u></strong>x² - 36$

$\blue {\: \sf {\boxed{identity:(a + b)(a - b) = {a}^{2} - {b}^{2} }}}$

$⟹\sf \: (x + 6)(x - 6)$

$⟹\sf {x}^{2} - {6}^{2}$

$⟹\sf \: {x}^{2} - 36$

$\sf \: How \: we \: obtained \: the\: identity?$

$\sf \: = (a - b)(a+b)$

$\sf \: = a(a+b)-b(a+b)$

$\sf \:= {a}^{2}+ab-ab+{b}^{2}$

$\sf \:= {a}^{2}-{b}^{2}$

Answer 2

$\huge\underline\mathbb\red{Answer}$

Identity :- (a+b) (a-b) = a²-b²

Applying the above identity on it

=> (x+6) (x-6)

=> x²-6²

=> x²-36