Resolve into factor :(a+b) ^3+1​

use the formula a^3+b^3= (a+b)-3ab(a+b)

in above question assume (a+b) as a and 1 as b

later in (a+b+1) take (a+b) as a and 1 as b

and use the formula (a+b)^2 = a^2+2ab+b^2

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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