Marcus solved for x in the quadratic equation x2 – 10x + 25 = 0. x = x = x = what is true about marcus’s work? check all that apply. marcus should have substituted –10 for b, not 10. the denominator should be 1, not 2. marcus should have subtracted 4(1)(25) in the square root. this equation, when solved correctly, only has 1 real number solution. this equation has 2 real number solutions.

we know that

The formula to solve a quadratic equation of the form is equal to

Step 1

Solve the quadratic equation by the formula

in this problem we have

so

substitute in the formula

Step 2

Statements about Marcus work

case A) Marcus should have substituted for b, not

The statement is True

The value of b is

See the procedure in Step

case B) The denominator should be 1, not 2

The statement is False

The denominator is

See the procedure in Step

case C) Marcus should have subtracted in the square root

The statement is True

See the procedure in Step

case D) This equation, when solved correctly, only has 1 real number solution

The statement is True

See the procedure in Step

The solution is

case E) This equation has real number solutions

The statement is False

The equation has only one real number solution

See the procedure in Step

x = 1/2

step-by-step explanation:

hope this !