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Expand the trinomial using the formula $\left(a+b+c\right)^2 = a^2 + b^2 + c^2 + 2ab + 2ac + 2bc$
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$\left(4m\right)^2+\left(5n\right)^2+p^2+2\cdot 4\cdot 5mn+2\cdot 4mp+2\cdot 5np$
Learn how to solve differential calculus problems step by step online. Simplify the expression (4m+5np)^2. Expand the trinomial using the formula \left(a+b+c\right)^2 = a^2 + b^2 + c^2 + 2ab + 2ac + 2bc. Multiply 2 times 4. Multiply 8 times 5. Multiply 2 times 4.