Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Fully simplify the expression below and write your answer as a single fraction.

(x^(3)+x^(2)-12 x)/(x^(2)+11 x+28)*(x-4)/(x^(5)-7x^(4)+12x^(3))
Answer:

Fully simplify the expression below and write your answer as a single fraction.\newlinex3+x212xx2+11x+28x4x57x4+12x3 \frac{x^{3}+x^{2}-12 x}{x^{2}+11 x+28} \cdot \frac{x-4}{x^{5}-7 x^{4}+12 x^{3}} \newlineAnswer:

Full solution

Q. Fully simplify the expression below and write your answer as a single fraction.\newlinex3+x212xx2+11x+28x4x57x4+12x3 \frac{x^{3}+x^{2}-12 x}{x^{2}+11 x+28} \cdot \frac{x-4}{x^{5}-7 x^{4}+12 x^{3}} \newlineAnswer:
  1. Factor Numerator and Denominator: Factor the numerator and the denominator of the first fraction.\newlineThe numerator x3+x212xx^3 + x^2 - 12x can be factored by taking out the common factor xx:\newlinex(x2+x12)x(x^2 + x - 12)\newlineNow, factor the quadratic x2+x12x^2 + x - 12:\newlinex(x+4)(x3)x(x + 4)(x - 3)\newlineThe denominator x2+11x+28x^2 + 11x + 28 can be factored into:\newline(x+4)(x+7)(x + 4)(x + 7)\newlineSo the first fraction becomes:\newlinex(x+4)(x3)(x+4)(x+7)\frac{x(x + 4)(x - 3)}{(x + 4)(x + 7)}
  2. Cancel Common Factors: Cancel out the common factors in the first fraction.\newlineThe (x+4)(x + 4) term is present in both the numerator and the denominator, so they cancel each other out:\newlinex(x3)(x+7)\frac{x(x - 3)}{(x + 7)}
  3. Factor Denominator: Factor the denominator of the second fraction.\newlineThe denominator x57x4+12x3x^5 - 7x^4 + 12x^3 can be factored by taking out the common factor x3x^3:\newlinex3(x27x+12)x^3(x^2 - 7x + 12)\newlineNow, factor the quadratic x27x+12x^2 - 7x + 12:\newlinex3(x3)(x4)x^3(x - 3)(x - 4)\newlineSo the second fraction becomes:\newline(x4)/x3(x3)(x4)(x - 4) / x^3(x - 3)(x - 4)
  4. Cancel Common Factors: Cancel out the common factors in the second fraction.\newlineThe (x4) (x - 4) term is present in both the numerator and the denominator, so they cancel each other out:\newline1x3(x3) \frac{1}{x^3(x - 3)}
  5. Multiply Simplified Fractions: Multiply the simplified first fraction by the simplified second fraction. \newlinex(x3)(x+7)×1x3(x3)\frac{x(x - 3)}{(x + 7)} \times \frac{1}{x^3(x - 3)}\newlineNow, cancel out the common (x3)(x - 3) term:\newlinex(x+7)×1x3\frac{x}{(x + 7)} \times \frac{1}{x^3}
  6. Combine Fractions: Simplify the expression by combining the fractions. \newlinexx+7×1x3\frac{x}{x + 7} \times \frac{1}{x^3} can be simplified by multiplying the numerators and denominators: \newlinex×1(x+7)×x3\frac{x \times 1}{(x + 7) \times x^3}\newlineThis simplifies to:\newlinexx4+7x3\frac{x}{x^4 + 7x^3}
  7. Check Further Simplification: Check for any further simplification. There are no common factors left to cancel, and the expression is as simplified as it can be.

More problems from Multiplication with rational exponents