Solve each equation in Exercises 1 - 14 by factoring. 7 - 7x = (3x + 2)(x - 1)

검증된 단계별 안내

Start by expanding the right-hand side of the equation \(7 - 7x = (3x + 2)(x - 1)\) using the distributive property (FOIL method): multiply each term in the first binomial by each term in the second binomial.

After expanding, rewrite the equation so that all terms are on one side, setting the equation equal to zero. This means subtracting the entire right-hand side expression from the left-hand side.

Combine like terms to simplify the equation into a standard quadratic form: \(ax^2 + bx + c = 0\).

Factor the quadratic expression obtained. Look for two numbers that multiply to \(a \times c\) and add to \(b\), or use other factoring techniques such as grouping or special products.

Set each factor equal to zero and solve for \(x\) to find the solutions to the original equation.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Factoring Quadratic Equations

Factoring involves rewriting a quadratic expression as a product of two binomials or other polynomials. This method is used to simplify equations and find their roots by setting each factor equal to zero.

Setting Equations to Zero

To solve polynomial equations by factoring, the equation must be rearranged so that one side equals zero. This allows the use of the zero-product property, which states that if a product equals zero, at least one factor must be zero.

Zero-Product Property

The zero-product property states that if the product of two expressions is zero, then at least one of the expressions must be zero. This principle is essential for solving equations after factoring, as it leads to finding the solutions.