Question

Math Solve 2y²+y-45=0​

Answer 1

Answer:

1:

125−−−√

example 2:

(7−3√)(2+3√)2

example 3:

250−−√−32−−√+72−−√−28√

example 4:

621−−√+7√+23√+2

example 5:

1−2√1+2√

example 6:

(156√+1+46√−2−123−6√)⋅(6√+11)

example 7:

Answer 2

the given equation

2y²+y-45=0.

.

solution:-

2y²+y-45=0.

2y²+( 10 - 9) y - 45 = 0

2y²+10y-9y-45 = 0.

2y( y+5) - 9(y+5)=0.

( y+5) ( 2y-9) = 0.

if y+5=0 =y= -5

if 2y-9= 0

2y= 9 => y= 9/2= 4½

therefore y= -5 & y = 4½