Question

calculati [1,2²-0,7²+(1 1/5-0,7)²]:(2,5²-1/4)​

Answer 1

[1,2²-0,7²+(1 1/5-0,7)²]:(2,5²-1/4)=

[1,44-0,49+(6/5-0,7)²]:(6,25-0,25)=

[0,95+(1,2-0,7)²]:6=

(0,95+0,5²):6=

(0,95+0,25):6=

1,2:6=0,2