Final Answer
Step-by-step Solution
Specify the solving method
Subtract the values $1$ and $-3$
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$-2+x^2+2\left(x^2+7x\right)=0$
Learn how to solve quadratic equations problems step by step online. Solve the quadratic equation x^2+12(x^2+7x)+-3=0. Subtract the values 1 and -3. Multiply the single term 2 by each term of the polynomial \left(x^2+7x\right). Combining like terms x^2 and 2x^2. Use the complete the square method to factor the trinomial of the form ax^2+bx+c. Take common factor a (3) to all terms.