Ricardo took the following steps to simplify the expression below but was surprised to hear that his answer was incorrect. Which of the following best describes Ricardo's mistake?
2x + 3x(x-3)-4
5x(x-3) -4
5x2 - 15x -4
A. Ricardo distributed incorrectly
B. Ricardo multiplied monomials incorrectly.
C. Ricardo added before multiplying.
D. Ricardo multiplied before adding,

your answer is -9

step-by-step explanation:

answer: b.36 feet

step-by-step explanation:

answerim :

n

step-by-step explanation:

im not sure but my dad knows

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!