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Rewrite the expression as a product of four linear factors:

(x^(2)+x)^(2)-18(x^(2)+x)+72
Answer:

Rewrite the expression as a product of four linear factors:\newline(x2+x)218(x2+x)+72 \left(x^{2}+x\right)^{2}-18\left(x^{2}+x\right)+72 \newlineAnswer:

Full solution

Q. Rewrite the expression as a product of four linear factors:\newline(x2+x)218(x2+x)+72 \left(x^{2}+x\right)^{2}-18\left(x^{2}+x\right)+72 \newlineAnswer:
  1. Recognize Structure: Recognize the structure of the given expression.\newlineThe given expression is a quadratic in form of (x2+x)218(x2+x)+72(x^2 + x)^2 - 18(x^2 + x) + 72, which resembles the structure of (a+b)218(a+b)+72(a + b)^2 - 18(a + b) + 72, where a=x2a = x^2 and b=xb = x.
  2. Factor Quadratic Expression: Factor the quadratic expression.\newlineWe can treat (x2+x)(x^2 + x) as a single variable, let's call it 'yy'. So the expression becomes y218y+72y^2 - 18y + 72. Now we need to factor this quadratic expression.
  3. Find Factors of 7272: Find the factors of 7272 that add up to 1818.\newlineThe factors of 7272 that add up to 1818 are 66 and 1212. So we can write the quadratic expression as (y6)(y12)(y - 6)(y - 12).
  4. Substitute Back: Substitute back x2+xx^2 + x for yy. Now we substitute back x2+xx^2 + x for yy to get ((x2+x)6)((x2+x)12)((x^2 + x) - 6)((x^2 + x) - 12).
  5. Expand Factors: Expand each factor to find the linear factors.\newlineWe need to factor (x2+x6)(x^2 + x - 6) and (x2+x12)(x^2 + x - 12) further to find the linear factors. Let's start with (x2+x6)(x^2 + x - 6).
  6. Factor x2+x6x^2 + x - 6: Factor (x2+x6)(x^2 + x - 6). The factors of 6-6 that add up to 11 (the coefficient of xx) are 33 and 2-2. So we can write (x2+x6)(x^2 + x - 6) as (x+3)(x2)(x + 3)(x - 2).
  7. Factor x2+x12x^2 + x - 12: Factor (x2+x12)(x^2 + x - 12). The factors of 12-12 that add up to 11 (the coefficient of xx) are 44 and 3-3. So we can write (x2+x12)(x^2 + x - 12) as (x+4)(x3)(x + 4)(x - 3).
  8. Combine Linear Factors: Combine all the linear factors.\newlineNow we have all the linear factors: (x+3)(x + 3), (x2)(x - 2), (x+4)(x + 4), and (x3)(x - 3). So the expression as a product of four linear factors is (x+3)(x2)(x+4)(x3)(x + 3)(x - 2)(x + 4)(x - 3).

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