Question

Please solve this fast ​

Answer 1

Step-by-step explanation:

i) 5x²+x-4=0

5x²+5x-4x-4=0

5x(x+1)-4(x+1)=0

x=4/5 x=-1

2) 5x²+x-4=0

Answer 2

Answer:

5x2+x-4

=5x2+5x-4x-4

=5x(x+1)-4(x+1)

=(x+1)(5x-4)

answer of 1

5x2+x-4

=(x+1)(5x-4)

either x+1=0

or 5x-4=,0

if x+1=0

then x=-1

if5x-4=0

5x=4

x=4/5

so,x=-1,4/5