# Find the root of the quadratic equations by using the quadratic formula in the following: –x2 + 7x – 10 = 0 - Mathematics

Sum

Find the root of the quadratic equations by using the quadratic formula in the following:

–x2 + 7x – 10 = 0

#### Solution

ax2 + bx + c = 0, a ≠ 0 is given by,

∴ x = (-7 +- sqrt((-7)^2 - 4(-1)(-10)))/(2(-1))

= (-7 +- sqrt(9))/(-2)

= (7 +- 3)/2

= 5, 2

Concept: Nature of Roots of a Quadratic Equation
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#### APPEARS IN

NCERT Mathematics Exemplar Class 10