What substitution should be used to rewrite 6(x + 5)2 + 5(x + 5) – 4 = 0 as a quadratic equation? u = (x + 5) u = (x – 5) u = (x + 5)2 u = (x – 5)2

The quadratic equation   can be rewritten by substituting i.e., option (1) is correct.

Further explanation:  

The equation of the form is defined as quadratic equation where and are real numbers.

The given quadratic equation is as follows:

Option (1)

Here, the option is .

Substitute in the equation .

The above obtained equation is the quadratic equation.

Therefore, option (1) is correct.

Option (2)

Here, the option is or .

Substitute in the equation  .

The above obtained equation is a quadratic equation but the given equation   cannot be rewritten as .

Therefore, option (2) is incorrect.

Option (3)

Here, the option is .

Substitute in the given equation .

The above obtained equation is not a quadratic equation.

Therefore, option (3) is incorrect.

Option (4)

Here, the option is or .

Substitute in the given equation  .

The above obtained equation is the not in the form of . Thus, the above equation is not a quadratic equation.

Therefore, option (4) is incorrect.

Thus, the quadratic equation   can be rewritten by substituting i.e., option (1) is correct.

Learn more

1. Problem on -intercept of the quadratic equation

2. Problem on the center and radius of an equation

3. Problem on the general form of the equation of the

Answer details:

Grade: Middle school

Subject: Mathematics

Chapter: Quadratic equations

Keywords: Quadratic equation, substitution, roots of the equation, function, sets, real numbers, integers,  ordinates, abscissa, interval, open interval, closed intervals, semi-closed intervals, semi-open, interval.

answer: sorry but i need points

step-by-step explanation:

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: