Question

evaluate 1.5 square + 2.5 square + 2 into 1.5 into 2.5 upon 1.5 + 2.5

Answer 1

[(1.5)^2+(2.5)^2+2×1.5×2.5]/(1.5+2.5) =
[1.5+2.5]^2/(1.5+2.5)=
(1.5+2.5) =
4