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The trinomial $49m^2-112mn+64n^2$ is a perfect square trinomial, because it's discriminant is equal to zero
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$\Delta=b^2-4ac=-112^2-4\left(49\right)\left(64\right) = 0$
Learn how to solve polynomial factorization problems step by step online. Factor the expression 49m^2-112mn64n^2. The trinomial 49m^2-112mn+64n^2 is a perfect square trinomial, because it's discriminant is equal to zero. Using the perfect square trinomial formula. Factoring the perfect square trinomial.