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Factor as the product of two binomials.

x^(2)-10 x+21=

Factor as the product of two binomials.\newlinex210x+21=x^{2}-10x+21=

Full solution

Q. Factor as the product of two binomials.\newlinex210x+21=x^{2}-10x+21=
  1. Identify the form: Identify the form of the quadratic trinomial. x210x+21x^2 - 10x + 21 represents the form ax2+bx+cax^2 + bx + c, where a=1a = 1, b=10b = -10, and c=21c = 21.
  2. Determine the factors: Determine the factors of the constant term, cc, that add up to the coefficient of the xx term, bb.\newlineWe need two numbers that multiply to 2121 and add up to 10-10. The numbers that satisfy these conditions are 3-3 and 7-7, because (3)×(7)=21(-3) \times (-7) = 21 and (3)+(7)=10(-3) + (-7) = -10.
  3. Write the factored form: Write the factored form of the expression x210x+21x^2 - 10x + 21 using the numbers found in the previous step.\newlineThe factored form will be (x3)(x7)(x - 3)(x - 7), because when we apply the distributive property (FOIL), we get x27x3x+21x^2 - 7x - 3x + 21, which simplifies to x210x+21x^2 - 10x + 21.