Question

(i) (x + 3) (x + 7)​

Answer 1

Answer:

x^2+24+3x

Step-by-step explanation:

x(x+3)+3(x+7)

x^2+3+3x+21

x^2+24+3x

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Answer 2

Answer:

$Answer = x^{2} + 10x +21$

Step-by-step explanation:

using identity IV:-

$(x+a)(x+b) = x^{2} + (a+b)x + ab$

$x = x\\\\a = +3\\\\b= +7$

$x^{2} + (3+7)x + (3*7)\\\\x^{2} + 10x +21$