Lucas and Tony were trying to solve the equation: x^2=16x+25x
2
=16x+25x, squared, equals, 16, x, plus, 25
Lucas said, “The x^2x
2
x, squared term is isolated, so I"ll take the square root of both sides and solve.”
Tony said, “I'll solve using the quadratic formula with a=1a=1a, equals, 1, b=16b=16b, equals, 16, and c=25c=25c, equals, 25.”