What is true about Marcus's work? Check all that Marcus solved for x in the quadratic equation x2 – 10x + 25 = 0. apply. O Marcus should have substituted –10 for b, not 10. 1. x = -btyb? - 4ac 2a O The denominator should be 1, not 2. 2. -(10) ±V(10)2 + 4(1)(25) O Marcus should have subtracted 4(1)(25) in the 2(1) square root. O This equation, when solved correctly, only has 1 real number solution. 3. - 10±/200 x = O This equation has 2 real number solutions.

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