Question

Convert the expression r 2 − 8r +8 = 0 to (r + a) 2 + b form clearly stating the values of ‘a’ and ‘b’
and hence solve the equation r 2 − 8r +8 = 0


full working correct answers

Answer 1

Answer:

r = 8 √32/ 2 - 4-2√2 = 1.172

r = 8+√32/ 2 = 4+2√2 = 6.828