Question

solve the quadratic equation x square -3x-10 =0 using completing square method​

Answer 1

Answer:

x=5 or x= -2

Step-by-step explanation:

solution

$x^{2}$ -3x-10 =0

$x^{2}$ -5x+2x-10=0

x(x-5) +2(x-5) =0

(x-5) (x+2) =o

we can write

x-5=0        or    x+2=0

x=5           or     x=-2

Answer 2

Answer:

x^2-2*x*3/2+(3/2)^2-(3/2)2=10

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

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

x-3/2=√49/4

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

x=-2,5