Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Rewrite the expression as a product of four linear factors:

(3x^(2)-14 x)^(2)-22(3x^(2)-14 x)+85
Answer:

Rewrite the expression as a product of four linear factors:\newline(3x214x)222(3x214x)+85 \left(3 x^{2}-14 x\right)^{2}-22\left(3 x^{2}-14 x\right)+85 \newlineAnswer:

Full solution

Q. Rewrite the expression as a product of four linear factors:\newline(3x214x)222(3x214x)+85 \left(3 x^{2}-14 x\right)^{2}-22\left(3 x^{2}-14 x\right)+85 \newlineAnswer:
  1. Recognize Quadratic Form: Recognize that the given expression is a quadratic in form, where the variable part is (3x214x)(3x^2 - 14x). Let's denote u=3x214xu = 3x^2 - 14x to see the structure more clearly.
  2. Rewrite in Terms of u: Rewrite the expression in terms of u: (u)222u+85(u)^2 - 22u + 85.
  3. Factor Quadratic Expression: Factor the quadratic expression in uu: (u)222u+85(u)^2 - 22u + 85 can be factored into (ua)(ub)(u - a)(u - b), where aa and bb are the roots of the quadratic equation u222u+85=0u^2 - 22u + 85 = 0.
  4. Find Roots: Find the roots of the quadratic equation by using the factoring method or the quadratic formula. The quadratic formula is u=b±b24ac2au = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}, where a=1a = 1, b=22b = -22, and c=85c = 85.
  5. Calculate Discriminant: Calculate the discriminant: Δ=b24ac=(22)24(1)(85)=484340=144\Delta = b^2 - 4ac = (-22)^2 - 4(1)(85) = 484 - 340 = 144.
  6. Find Square Root: Find the square root of the discriminant: Δ=144=12\sqrt{\Delta} = \sqrt{144} = 12.
  7. Use Quadratic Formula: Find the two roots using the quadratic formula: u=22±122u = \frac{{22 \pm 12}}{{2}}. This gives us two roots: u=17u = 17 and u=5u = 5.
  8. Rewrite Factored Form: Rewrite the factored form using the roots: (u17)(u5)(u - 17)(u - 5).
  9. Substitute back for uu: Substitute back 3x214x3x^2 - 14x for uu to get the factored form in terms of xx: (3x214x17)(3x214x5)(3x^2 - 14x - 17)(3x^2 - 14x - 5).
  10. Factor First Quadratic: Notice that each quadratic factor can be further factored into linear factors because they are both quadratic expressions with real roots. We will factor each quadratic separately.
  11. Write Factored Form: Factor the first quadratic 3x214x173x^2 - 14x - 17. We look for two numbers that multiply to 3×17=51-3\times17 = -51 and add to 14-14. These numbers are 17-17 and 33.
  12. Factor Second Quadratic: Write the factored form of the first quadratic: \(3x + 33)(x - 1717)\.
  13. Write Factored Form: Factor the second quadratic 3x214x53x^2 - 14x - 5. We look for two numbers that multiply to 3×5=15-3 \times 5 = -15 and add to 14-14. These numbers are 15-15 and 11.
  14. Combine Linear Factors: Write the factored form of the second quadratic: (3x+1)(x5)(3x + 1)(x - 5).
  15. Combine Linear Factors: Write the factored form of the second quadratic: \(3x + 11)(x - 55)\.Combine the linear factors to express the original expression as a product of four linear factors: \(3x + 33)(x - 1717)(33x + 11)(x - 55)\.

More problems from Operations with rational exponents