Question

what is the value of ( 0.512+ 0.027) \ (0.8) ×(0.8) +(0.3) ×(0.3) -0. 24​

Answer 1

Answer:

We have (0.512+0.027)/0.8×0.8+0.3×0.3-0.24

>(0.8)³+(0.3)³/(0.8)²-0.8×0.3+(0.3)²

>a³+b³/a²-ab+b² whereas=0.8 and b=0.3

>(a+b)(a²-ab+b²)/(a²-ab+b²)

>a+b

>0.8+0.3

1.1

Here we have used identity 8:a³+b³=(a+b)(a²-ab+b²)