Please answer my questions using formulas
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hope it helps you mate....
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please try to understand
firstly the formulas to be used are:
1.(x+y) (x-y) = x square-y square
2.(a+b) cube = a cube +b cube + 2ab ( a+ b)
Step-by-step explanation:
answer 1.
from formula 1
(x+2) (x-2) = x square - 2 square
= x square - 4
answer 2.
in this also using formula 1
(4+7)(4-7) = (11)(-3)
= -33
answer 3.
(3+2)cube = (3+2)cube
= (5)cube
= 125
answer 4.
(4+1) cube = (4+1)cube
= (5)cube
= 125
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