Question

R2 - 10r = -17 quadratic equation pls show the solution

Answer 1

r²-10rb+17 = 0

D=b²-4ac= 100-4×17= 100-68 = 32

x= -b +- √D / 2a = 10 +- √32 / 2 = 10 +- 4√2 / 2

x= 5+- 2√2

x= 5+2√2 or x= 5-2√2