# What Substitution Should Be Used To Rewrite 4×4 – 21×2 + 20 = 0 As A Quadratic Equation? U = X2 U = 2×2 U = X4 U = 4×4

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## What substitution should be used to rewrite 4×4 – 21×2 + 20 = 0 as a quadratic equation? u = x2 u = 2×2 u = x4 u = 4×4

Consider the equation

We have to rewrite this equation as quadratic equation.

A quadratic equation is of the form , where ‘a’, ‘b’ and ‘c’ are the real numbers.

The given equation can be expressed as ,

Let u = in the given equation, we get

is the required quadratic equation.

Therefore, u = has changed the given equation into quadratic equation.

So, Option 1 is the correct answer.

Types of Equations and Examples – ExamPlanning % – Examples of Quadratic Equations These equations contains a trigonometric function. So, first we must have to introduce the trigonometric functions to explore them thoroughly. It is an equation who have variables in the place of exponents. This can be solved using the property: ax=ay=> x = y.The substitution method is a technique for solving a system of equations. This article reviews the technique with multiple examples and some practice If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make…Learn how to use the Algebra Calculator to solve systems of equations. Example Problem. Solve the following system of equations: x+y=7, x+2y=11.

Substitution method review (systems of equations)… | Khan Academy – The answer is u=x2 to the question. This site is using cookies under cookie policy. You can specify conditions of storing and accessing cookies in your browser.We have to rewrite this equation as quadratic equation. x=17step-by-step explanation: solve 3x-24=x+10then that makes it 2x=34 because you subtract an x from both sides to get rid of the one on the right, and then you add 24 to both sid…Read More.Substitution: u = x4. Resulting quadratic equation: u2 – 3u + 2 = 0.

Solving Systems of Equations Using Algebra Calculator – MathPapa – The standard form of a quadratic equation is, The given equation can be written as, Substitute x² = t This site is using cookies under cookie policy. You can specify conditions of storing and accessing cookies in your browser.Hidden Quadratic Equations! As we saw before, the Standard Form of a Quadratic Equation is. The "solutions" to the Quadratic Equation are where it is equal to zero. They are also called "roots", or Use the Quadratic Formula:x = −(−4) ± √(−9) 2. √(−9) = 3i (where i is the imaginary number √−1).A quadratic equation can have either one or two distinct real or complex roots depending upon nature of discriminant of the equation. He loves to learn new techs and write programming articles especially for beginners. He works at Vasudhaika Software Sols. as a Software Design Engineer and…