Question

R^2+8r=-7
solve the equation with the quadratic formula showing work

Answer 1

Explanation:

r²+8r=−7

Step 1: Subtract -7 from both sides.

r²+8r−(−7)=−7−(−7)

r²+8r+7=0

Step 2: Use quadratic formula with a=1, b=8, c=7.

r=
`r=(-b+or-√(-4ac)  )/(2a)`

`r=(-8+or-√((8))^2-4(1)(7) )/(2(1))`