Guide :High School

simplify (15+6)^2-(8-5)^2

Simplify (15+6)^2-(8-5)^2
Use "PEMDAS" (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction) to know what to do first.(15 + 6)^{2} - (8 - 5)^{2}   Solve the insides of the parentheses21^{2} - 3^{2}                   Solve the exponents (21 x 21) and (3 x 3)441 - 9                             Subtract432 ...

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