Question

Solve the following quadratic equations
by factorisation.
x² +X-20=0


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Answer 1

HEY MATE HERE IS YOUR SOLUTION. .....

■ x^2+x-20=0

=> x^2 +5x -4x -20 = 0

=> x (x+5)-4 (x+5)=0

=>(x+5)(x-4)=0

if

x+5=0

x=-5 →→→

if

x-4=0

x=4 →→→→→

Answer 2

x2 + x - 20 = 0

x2 + 5x - 4x - 20 = 0

x(x + 5) -4(x + 5) = 0

(x +5)(x - 4)=0

so, x + 5 = 0 and x - 4 = 0

=) x = -5 and =) x = 4

Solved.