-15x²+7x+23=0 i just need the answer of it even it's not correct charr cge na loves

Use the quadratic formula where -15 = a, 7 = b, 23 = c:  

Plug in the values:

And get:

Which simplifies to:

Those are approximately 1 and -1.5

1. is 4 and 2. is 3

step-by-step explanation:

so if you look at the first one you see that 1 is to 4 and 2 is to 8 and so on, so you can see for every 1 there is a times 4 so if it were 3 then it would be 3*4 and it is 12

for number 2 it is 3 because 1 is to 3 and 2 is to 6 so for every 1 there is 3 so if it were 3 then there would be 3*3 = 9

the fist one is not equalvalent but i think th second one isand the third isnt definetly or the last one is i think. hope this !

step-by-step explanation: