# Solve Each of the Following Equations for X and Give, in Each Case, Your Answer Correct to Two Decimal Places : 2x2 – 10x +5=0 - Mathematics

Sum

Solve each of the following equations for x and give, in each case, your answer correct to two decimal places :

2x2 – 10x +5=0

#### Solution

2x^2 - 10x + 5 = 0

Here a= 2, b = -10 and c = 5

:. x = (-b +- sqrt(b^2 - 4ac))/(2a)

= (-(-10)+- sqrt((-10)^2 - 4(2)(5)))/(2(2))

= (10 +- sqrt60)/4 = (10 +- 7.75)/4

= (10 + 7.75)/4 and (10 - 7.75)/4 = 4.44 and 0.56

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#### APPEARS IN

Selina Concise Maths Class 10 ICSE