Question
Solve the quadratic equation
Solve using the quadratic formula
Solve by completing the square
Solve using the PQ formula
t1=94−7,t2=94+7
Alternative Form
t1≈0.150472,t2≈0.738417
Evaluate
2−16t=6(−3t2)
Multiply the numbers
More Steps

Evaluate
6(−3)
Multiplying or dividing an odd number of negative terms equals a negative
−6×3
Multiply the numbers
−18
2−16t=−18t2
Swap the sides
−18t2=2−16t
Move the expression to the left side
−18t2−2+16t=0
Rewrite in standard form
−18t2+16t−2=0
Multiply both sides
18t2−16t+2=0
Substitute a=18,b=−16 and c=2 into the quadratic formula t=2a−b±b2−4ac
t=2×1816±(−16)2−4×18×2
Simplify the expression
t=3616±(−16)2−4×18×2
Simplify the expression
More Steps

Evaluate
(−16)2−4×18×2
Multiply the terms
More Steps

Multiply the terms
4×18×2
Multiply the terms
72×2
Multiply the numbers
144
(−16)2−144
Rewrite the expression
162−144
Evaluate the power
256−144
Subtract the numbers
112
t=3616±112
Simplify the radical expression
More Steps

Evaluate
112
Write the expression as a product where the root of one of the factors can be evaluated
16×7
Write the number in exponential form with the base of 4
42×7
The root of a product is equal to the product of the roots of each factor
42×7
Reduce the index of the radical and exponent with 2
47
t=3616±47
Separate the equation into 2 possible cases
t=3616+47t=3616−47
Simplify the expression
More Steps

Evaluate
t=3616+47
Divide the terms
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Evaluate
3616+47
Rewrite the expression
364(4+7)
Cancel out the common factor 4
94+7
t=94+7
t=94+7t=3616−47
Simplify the expression
More Steps

Evaluate
t=3616−47
Divide the terms
More Steps

Evaluate
3616−47
Rewrite the expression
364(4−7)
Cancel out the common factor 4
94−7
t=94−7
t=94+7t=94−7
Solution
t1=94−7,t2=94+7
Alternative Form
t1≈0.150472,t2≈0.738417
Show Solution
