Question

Sove the given question by identity 1.25×1.25-2×1.25×0.5+0.5×0.5/0.45×0.45+2×0.45×0.3+0.3×0.3

Answer 1

Answer:

{(1.25)^2-2(1.25)(0.5)+(0.5)^2}÷{(0.45)^2+2(0.45)(0.3)+(0.3)^2}

={(1.25-0.5)^2}÷{(0.45+0.3)^2}

=(1.75×1.75)÷(0.75×0.75)

=5.44

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