help me in to find the right answer----?

Question

help me to find the right answer--
for the quadratic equattion--
x(race to the power 2)+7x+12
find me one of the roots of this equation from the choices
(A)7 (B)4 (c)-3 (D)3

help me to find the right answer--
for the quadratic equattion--
x(race to the power 2)+7x+12
find me one of the roots of this equation from the choices
(A)7 (B)4 (c)-3 (D)3
ande explain why it is.. meaning show the solving process

Answer 1

First of all, the correct notation in computer if you don't have microsoft equation for x raised to the power 2 (or x squared) is x^2.

So, your problem is
x^2 + 7x + 12 = 0
(x + 4)(x + 3) = 0
x = -4 or -3

So the roots are -4 or -3. From the choices of answers, (C) is the correct answer.

Answer 2

x^2 + 7x + 12 to find roots set equation equal to 0
x^2 + 7x + 12 = 0
(x+3)(x+4) = 0 SET either term = 0 for answer

x + 3 = 0
x = -3

x + 4 = 0
x = -4

The two ANSWERS are x= -3 and x = -4

CHECK put these answers into the original equaiton
x^2 + 7x + 12
(-3)^2 + 7(-3) + 12
9 - 21 + 12
0
checks

x^2 + 7x + 12
(-4)^2 + 7(-4) + 12
16 -28 + 12
0
checks

Answer 3

X^2 + 7X +12 (I assume this is equal to 0).

You need two numbers whose product is 12 and whose sum is 7.

Now go and figure it out.

Answer 4

-3