Question

Formulas for quadratic equations class 10th

Answer 1

Answer:

b^2-4ac

-b+or-√b^2-4ac/2a

Answer 2

Formulas:

by factorisation method

eg. 3x^2+6x+3------- 3x^2+3x+3x+3----3x(x+1)+3(x+1)=3x+3 and (x+1)

x=-1 and x=-1

by completing the square

steps:

step 1 divide the whole equation by coefficient of x^2

step 2 Write x^2 as x and divide the x containing number by 1/2. then number obtained by multiplying by 1/2 write that as -(no.)

then solve the whole equation

by quadratic formula

-b_+√b^2-4ac/2a

hope it helps... please mark as brainliest