When asked to factor the trinomial 4x^2+12x+9 a student gives the answer (2x-3)(2x-3) what is one thing wrong with this answer a. the minus signs should be plus signs b. 4 is also a factor of this trinomial c. the factors are not simplified d. there is nothing wrong with the answer

TA. the minus signs should be plus signs  It should be (2x+3)(2x+3) or (2x+3)^2

The minus sign must be plus sign.                  Option D

Step-by-step explanation:

Given quadratic is 4x²+12x+9

Find the factor of given quadratic. We use complete square method to find the factor.

Take common 4

4(x²+3x) + 9

=4(x² + 3x +) + 9 - 9

=4(x +)²

=

=(2x+3)²

=(2x+3)(2x+3)

In student's answer the minus sign must be plus sign.

That's the final answer.

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.