Question

volume of (0.8m+1.1n) (0.8m -1.1n)​

Answer 1

Step-by-step explanation:

(a+b)(a-b)= a²-b²

(0.8+1.1)(0.8-1.1)=(0.8)²-(1.1)²

=0.64-1.21

=-0.57

Answer 2

Answer:

=(0.8m)^2-(1.1n)^2

=0.64m^2-1.21n^2

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