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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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$x^{4}+\left(3x\right)^2+1+6x^2x-2x^2-6x$
Learn how to solve simplification of algebraic expressions problems step by step online. Simplify the expression (x^2+3x+-1)^2. Expand the trinomial using the formula \left(a+b+c\right)^2 = a^2 + b^2 + c^2 + 2ab + 2ac + 2bc. When multiplying exponents with same base you can add the exponents: 6x^2x. The power of a product is equal to the product of it's factors raised to the same power. Combining like terms 9x^2 and -2x^2.