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Factor completely:

(5x+7)(5x-8)+(5x+9)(5x+7)
Answer:

Factor completely:\newline(5x+7)(5x8)+(5x+9)(5x+7) (5 x+7)(5 x-8)+(5 x+9)(5 x+7) \newlineAnswer:

Full solution

Q. Factor completely:\newline(5x+7)(5x8)+(5x+9)(5x+7) (5 x+7)(5 x-8)+(5 x+9)(5 x+7) \newlineAnswer:
  1. Expand Expression: Expand the given expression.\newlineWe have the expression (5x+7)(5x8)+(5x+9)(5x+7)(5x+7)(5x-8) + (5x+9)(5x+7). To simplify, we first need to expand each set of parentheses by using the distributive property (also known as the FOIL method for binomials).\newlineFirst, expand (5x+7)(5x8)(5x+7)(5x-8):\newline(5x+7)(5x8)=5x5x+5x(8)+75x+7(8)(5x+7)(5x-8) = 5x\cdot 5x + 5x\cdot (-8) + 7\cdot 5x + 7\cdot (-8)\newline=25x240x+35x56= 25x^2 - 40x + 35x - 56\newline=25x25x56= 25x^2 - 5x - 56\newlineNext, expand (5x+9)(5x+7)(5x+9)(5x+7):\newline(5x+9)(5x+7)=5x5x+5x7+95x+97(5x+9)(5x+7) = 5x\cdot 5x + 5x\cdot 7 + 9\cdot 5x + 9\cdot 7\newline=25x2+35x+45x+63= 25x^2 + 35x + 45x + 63\newline=25x2+80x+63= 25x^2 + 80x + 63\newlineNow, add the expanded forms together:\newline(25x25x56)+(25x2+80x+63)(25x^2 - 5x - 56) + (25x^2 + 80x + 63)\newline(5x+7)(5x8)(5x+7)(5x-8)00
  2. Combine Like Terms: Combine like terms.\newlineAfter expanding, we combine like terms to simplify the expression further.\newline25x25x56+25x2+80x+6325x^2 - 5x - 56 + 25x^2 + 80x + 63\newline= (25x2+25x2)+(5x+80x)+(56+63)(25x^2 + 25x^2) + (-5x + 80x) + (-56 + 63)\newline= 50x2+75x+750x^2 + 75x + 7
  3. Factor by Grouping: Factor by grouping (if possible).\newlineLooking at the simplified expression 50x2+75x+750x^2 + 75x + 7, we try to factor by grouping. However, the coefficients do not have a common factor other than 11, and the expression does not appear to be factorable by grouping.
  4. Check Factorability: Check if the expression is factorable.\newlineWe need to check if the trinomial 50x2+75x+750x^2 + 75x + 7 can be factored. For a trinomial ax2+bx+cax^2 + bx + c to be factorable, there must be two numbers that multiply to acac (in this case, 50×7=35050 \times 7 = 350) and add up to bb (in this case, 7575). After checking, we find that there are no two integers that satisfy these conditions for the given trinomial. Therefore, the expression is already in its simplest form and cannot be factored further.