Skip to main content
Ch. R - Algebra Review
Lial - Trigonometry 12th Edition
Lial12th EditionTrigonometryISBN: 9780136552161당신이 사용하는 게 아니라요?교과서 변경
1장, 문제 R.6.81

Solve each inequality. Give the solution set using interval notation. See Examples 8 and 9. -3(x - 6) > 2x - 2

검증된 단계별 안내
1
Start by distributing the -3 on the left side of the inequality: write the expression as \(-3 \times (x - 6)\) and apply the distributive property to get \(-3x + 18\).
Rewrite the inequality with the distributed terms: \(-3x + 18 > 2x - 2\).
Next, collect all the variable terms on one side and the constant terms on the other side. For example, add \$3x$ to both sides and add \(2\) to both sides to isolate terms: \(18 + 2 > 2x + 3x\).
Simplify both sides: combine like terms to get \(20 > 5x\).
Finally, solve for \(x\) by dividing both sides of the inequality by 5, remembering to keep the inequality direction the same since you are dividing by a positive number. Express the solution set in interval notation based on the inequality obtained.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
2m
도움이 되었나요?

주요 개념

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

Solving Linear Inequalities

Linear inequalities involve expressions with variables raised to the first power and inequality signs. To solve them, isolate the variable on one side by performing algebraic operations, similar to solving equations, but remember to reverse the inequality sign when multiplying or dividing by a negative number.
추천 영상:
7:48
Solving Linear Equations

Distributive Property

The distributive property allows you to multiply a single term across terms inside parentheses, i.e., a(b + c) = ab + ac. Applying this property correctly is essential to simplify expressions before solving inequalities.
추천 영상:
2:20
Imaginary Roots with the Square Root Property

Interval Notation

Interval notation is a way to represent solution sets of inequalities using intervals. It uses parentheses for values not included and brackets for values included, clearly showing the range of possible solutions on the number line.
추천 영상:
06:01
i & j Notation