Solve the following equation:
3x2−17x+28=x+4
To solve the equation 3x2−17x+28=x+4, follow these steps:
- Step 1: Simplify the equation.
Begin by moving all terms to one side of the equation to obtain a standard form quadratic equation:
3x2−17x+28−x−4=0
- Simplify further:
3x2−18x+24=0
- Step 2: Identify coefficients.
The equation is now in the standard form ax2+bx+c=0 where a=3, b=−18, and c=24.
- Step 3: Use the quadratic formula to solve for x.
The quadratic formula is given by:
x=2a−b±b2−4ac
- Calculate the discriminant b2−4ac:
(−18)2−4(3)(24)=324−288=36
- Since the discriminant is positive, there are two solutions.
- Apply the quadratic formula:
x=2(3)−(−18)±36=618±6
- Calculate the two possible solutions:
x1=618+6=4
x2=618−6=2
Therefore, the solutions to the equation are x1=4 and x2=2.
x1=4, x2=2