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Solve the quadratic by factoring.

3x^(2)+15=19 x+9
Answer: 
x=

Solve the quadratic by factoring.\newline3x2+15=19x+9 3 x^{2}+15=19 x+9 \newlineAnswer: x= x=

Full solution

Q. Solve the quadratic by factoring.\newline3x2+15=19x+9 3 x^{2}+15=19 x+9 \newlineAnswer: x= x=
  1. Write Standard Form: Write the quadratic equation in standard form.\newlineWe need to bring all terms to one side of the equation to have it in the form ax2+bx+c=0ax^2 + bx + c = 0.\newline3x2+15=19x+93x^2 + 15 = 19x + 9\newlineSubtract 19x19x and 99 from both sides to get:\newline3x219x+159=03x^2 - 19x + 15 - 9 = 0\newline3x219x+6=03x^2 - 19x + 6 = 0
  2. Identify aa, bb, cc: Identify aa, bb, and cc in the standard form of the quadratic equation.\newlineFrom 3x219x+6=03x^2 - 19x + 6 = 0, we can see that:\newlinea=3a = 3\newlineb=19b = -19\newlinec=6c = 6
  3. Find Multiplying Numbers: Find two numbers that multiply to aca*c (36=183*6=18) and add up to bb (19-19).\newlineWe need to find two numbers that multiply to 1818 and add up to 19-19. These numbers are 3-3 and 16-16 because:\newline316=18-3 * -16 = 18\newline3+16=19-3 + -16 = -19
  4. Rewrite Using Numbers: Rewrite the quadratic equation using the numbers found in Step 33 to split the middle term.\newlineWe can split the middle term 19x-19x into 3x16x-3x - 16x:\newline3x23x16x+6=03x^2 - 3x - 16x + 6 = 0
  5. Factor by Grouping: Factor by grouping.\newlineGroup the first two terms and the last two terms:\newline(3x23x)(16x16)=0(3x^2 - 3x) - (16x - 16) = 0\newlineFactor out the greatest common factor from each group:\newline3x(x1)2(8x3)=03x(x - 1) - 2(8x - 3) = 0
  6. Factor Common Binomial: Factor out the common binomial factor.\newlineWe need to rewrite the expression so that we have a common factor to factor out. However, we see that there is no common binomial factor between 3x(x1)3x(x - 1) and 2(8x3)2(8x - 3). This indicates that there is a mistake in the previous steps.