Which statement best describes the equation (x + 5)2 + 4(x + 5) + 12 = 0?

a)the equation is quadratic in form because it can be rewritten as a quadratic equation with u substitution u = (x + 5).

b)the equation is quadratic in form because when it is expanded, it is a fourth-degree polynomial.

c)the equation is not quadratic in form because it cannot be solved by using the quadratic formula.

d)the equation is not quadratic in form because there is no real solution.

 Option A is correct.

Step-by-step explanation:

We have been given an equation:

Since, the equation has degree that is highest power 2  so, it is quadratic

Therefore, option A is correct  that is the equation is quadratic in the form because it can be rewritten as a quadratic equation with u substitution u = (x + 5).

Option B is incorrect because it will not give fourth degree polynomial

Option C and D are incorrect because the equation is quadratic.

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation: