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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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$x^2+\left(-2y\right)^2+z^2+2\cdot -2xy+2xz+2\cdot -2yz$
Learn how to solve simplification of algebraic expressions problems step by step online. Simplify the expression (x-2yz)^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 -2. Multiply 2 times -2.