Math, asked by krishabihani, 10 months ago

find value of x by completing the square in x^2-3x-10=0​

Answers

Answered by nikshaya3434
2

Answer:

x=5,x=-5

Step-by-step explanation:

x^2-3x-10=0......(1)

x^2-2.3/2x=10,

adding( 3/2)^2 on both sides we get,,

x^2-2.3/2.x+(3/2)^2=10+(3/2)^,

it is in the form of a^2-2.ab+b^2= (a-b)^2,

(x-3/2)^2=10+9/4,

(x-3/2)^2=49/4,

x-3/2=+or-7/2,

x=+or-7/2+3/2,

x=+ or-10/2,

x= 5or-5.

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