Question
Find the roots
x1=35−13,x2=35+13
Alternative Form
x1≈0.464816,x2≈2.868517
Evaluate
3x2−10x+4
To find the roots of the expression,set the expression equal to 0
3x2−10x+4=0
Substitute a=3,b=−10 and c=4 into the quadratic formula x=2a−b±b2−4ac
x=2×310±(−10)2−4×3×4
Simplify the expression
x=610±(−10)2−4×3×4
Simplify the expression
More Steps

Evaluate
(−10)2−4×3×4
Multiply the terms
More Steps

Multiply the terms
4×3×4
Multiply the terms
12×4
Multiply the numbers
48
(−10)2−48
Rewrite the expression
102−48
Evaluate the power
100−48
Subtract the numbers
52
x=610±52
Simplify the radical expression
More Steps

Evaluate
52
Write the expression as a product where the root of one of the factors can be evaluated
4×13
Write the number in exponential form with the base of 2
22×13
The root of a product is equal to the product of the roots of each factor
22×13
Reduce the index of the radical and exponent with 2
213
x=610±213
Separate the equation into 2 possible cases
x=610+213x=610−213
Simplify the expression
More Steps

Evaluate
x=610+213
Divide the terms
More Steps

Evaluate
610+213
Rewrite the expression
62(5+13)
Cancel out the common factor 2
35+13
x=35+13
x=35+13x=610−213
Simplify the expression
More Steps

Evaluate
x=610−213
Divide the terms
More Steps

Evaluate
610−213
Rewrite the expression
62(5−13)
Cancel out the common factor 2
35−13
x=35−13
x=35+13x=35−13
Solution
x1=35−13,x2=35+13
Alternative Form
x1≈0.464816,x2≈2.868517
Show Solution
