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Factor completely.

100-140 x+49x^(2)=

+=^(-x)

Factor completely.\newline100140x+49x2= 100-140 x+49 x^{2}=

Full solution

Q. Factor completely.\newline100140x+49x2= 100-140 x+49 x^{2}=
  1. Recognize Polynomial Type: Recognize the type of polynomial and determine the factoring strategy. The given polynomial is a quadratic in the form of ax2+bx+cax^2 + bx + c. We can attempt to factor it as a product of two binomials if it is factorable. The coefficients suggest that it might be a perfect square trinomial because 100100 and 4949 are perfect squares, and 140140 is twice the product of the square roots of 100100 and 4949.
  2. Write Perfect Squares: Write down the perfect squares of the coefficients of the quadratic polynomial.\newlineThe square root of 100100 is 1010, and the square root of 4949 is 77. The middle term coefficient, 140-140, is twice the product of 1010 and 77, which is 2×10×7=1402 \times 10 \times 7 = 140. This suggests that the polynomial might be a perfect square trinomial.
  3. Check Perfect Square Trinomial: Write the polynomial in the form of (ax+b)2(ax + b)^2 to see if it matches the given polynomial.\newlineThe perfect square trinomial would be (107x)2(10 - 7x)^2 because (10)2=100(10)^2 = 100 and (7x)2=49x2(7x)^2 = 49x^2 and the middle term would be 2×10×7x=140x2 \times 10 \times 7x = 140x, but we have 140x-140x in the polynomial, so it should be (107x)2(10 - 7x)^2.
  4. Expand to Verify: Expand (107x)2(10 - 7x)^2 to verify if it equals the given polynomial.(10 - 7x)^2 = (10 - 7x)(10 - 7x) = 100 - 70x - 70x + 49x^2 = 100 - 140x + 49x^2\.This matches the given polynomial exactly.
  5. Write Final Factored Form: Write the final factored form of the polynomial. The factored form of the polynomial 100140x+49x2100 - 140x + 49x^2 is (107x)2(10 - 7x)^2.