2.5 x 2.5 x 2.5 - 1.4 x 1.4 x 1.4
(2.5)2+ 2.5 X 1.4 + (1.4)2

a) 2.5×2.5×2.5-1.4×1.4×1.4=12.881

b) (2.5)2+2.5×1.4+(1.4)2=31.5

Step-by-step explanation:

yuh multiple 2.5 three times and subtract 1.4 multiple three times. 2.5×2.5×2.5-1.4×1.4×1.4

15.625-2.744=12.881.

b) when opening bracket Yuh multiple the number in the bracket by the number outside the bracket. when bracket is open Yuh can now add, multiple to obtain your answer please

(2.5)2+2.5×1.4+(1.4)2

5+2.5×1.4+2.8

7.5×4.2=31.5

1.96

Step-by-step explanation:

since there is a power on 1.4 which is 2

1.4^2

it will be 1.4 x 1.4 = 1.96

Dont times this number twice it will be a wrong answer.

1.4 x 2 = 2.8  Wrong answer.

The answer is 1.96

the answer is 62

triangle and cube

step-by-step explanation: