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Rewrite the expression as a product of four linear factors:

(4x^(2)+x)^(2)-19(4x^(2)+x)+70
Answer:

Rewrite the expression as a product of four linear factors:\newline(4x2+x)219(4x2+x)+70 \left(4 x^{2}+x\right)^{2}-19\left(4 x^{2}+x\right)+70 \newlineAnswer:

Full solution

Q. Rewrite the expression as a product of four linear factors:\newline(4x2+x)219(4x2+x)+70 \left(4 x^{2}+x\right)^{2}-19\left(4 x^{2}+x\right)+70 \newlineAnswer:
  1. Identify Expression: Let's identify the expression we need to factor: 4x^2 + x)^2 - 19(4x^2 + x) + 70\. This is a quadratic in form, with the "variable" being \$4x^2 + x)\. Let's set \$u = 4x^2 + x to simplify the expression.
  2. Substitute Variable: Substitute uu into the expression to see the quadratic form more clearly: u219u+70u^2 - 19u + 70.
  3. Factor Quadratic Expression: Now we need to factor the quadratic expression u219u+70u^2 - 19u + 70. We are looking for two numbers that multiply to 7070 and add up to 19-19. These numbers are 14-14 and 5-5 because (14)×(5)=70(-14) \times (-5) = 70 and (14)+(5)=19(-14) + (-5) = -19.
  4. Write Factored Form: We can now write the factored form of the quadratic as (u14)(u5)(u - 14)(u - 5).
  5. Substitute Back for u: Substitute back 4x2+x4x^2 + x for uu to get the factored form in terms of xx: (4x2+x14)(4x2+x5)(4x^2 + x - 14)(4x^2 + x - 5).
  6. Factor Quadratic Expression Further: Now we need to factor each quadratic expression further. Let's start with 4x2+x144x^2 + x - 14. We are looking for two numbers that multiply to 56-56 (4×144 \times -14) and add up to 11. These numbers are 88 and 7-7 because (8)×(7)=56(8) \times (-7) = -56 and 8+(7)=18 + (-7) = 1.
  7. Write Factored Form: We can now write the factored form of 4x2+x144x^2 + x - 14 as (4x7)(x+2)(4x - 7)(x + 2).
  8. Factor Quadratic Expression Further: Next, we factor 4x2+x54x^2 + x - 5. We are looking for two numbers that multiply to 20-20 (4×54 \times -5) and add up to 11. These numbers are 55 and 4-4 because (5)×(4)=20(5) \times (-4) = -20 and 5+(4)=15 + (-4) = 1.
  9. Write Factored Form: We can now write the factored form of 4x2+x54x^2 + x - 5 as (4x5)(x+1)(4x - 5)(x + 1).
  10. Combine Linear Factors: Finally, we combine all the linear factors to express the original expression as a product of four linear factors: 4x74x - 7(x+2x + 2)(4x54x - 5)(x+1x + 1).

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