Solve using the quadratic formula.3z2+3z−6=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.z=_____ or z=_____
Q. Solve using the quadratic formula.3z2+3z−6=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.z=_____ or z=_____
Identify values: Identify the values of a, b, and c in the quadratic equation3z2+3z−6=0. By comparing 3z2+3z−6=0 with the standard form ax2+bx+c=0, we find: a=3b=3c=−6
Substitute into formula: Substitute the values of a, b, and c into the quadratic formula z=2a−b±b2−4ac. Substitute a=3, b=3, and c=−6 into the formula. z=2⋅3−(3)±(3)2−4⋅3⋅(−6)
Simplify and calculate discriminant: Simplify the expression under the square root and calculate the discriminant.(3)2−4⋅3⋅(−6) = 9+72 = 81
Continue simplifying formula: Continue simplifying the quadratic formula with the calculated discriminant.z=6−3±81Since 81=9, we have:z=6−3±9
Calculate solutions: Calculate the two possible solutions for z. First solution: z=(−3+9)/6 z=6/6 z=1 Second solution: z=(−3−9)/6 z=−12/6 z=−2
More problems from Solve a quadratic equation using the quadratic formula