What Method Would You Choose To Solve The Equation 2X2 – 7 = 9? Explain Why You Chose This Method.
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Answers ( 2 )
When attempting to solve an equation, it is important to consider the best method for finding the correct answer. For the equation 2×2 + 7 = 9, there are a few methods that could be used to solve it.
One method that can be used is factoring. This involves multiplying both sides of the equation together in order to isolate the variable on one side. In this particular example, factoring would involve multiplying 2×2 and 9 together on each side of the equation, yielding 4×2 = 18. Dividing both sides by 4 then gives x2 = 4.5, and finally taking the square root of both sides yields x = ±2.121320343559643.
Solving equations can be tricky, but with the right method, it can be not only straightforward, but also enjoyable! So, what method would I choose to solve the equation 2×2 – 7 = 9?
I would choose the Quadratic Formula to solve this equation. This formula is often used when equations have a degree of two, which is the case with 2×2 – 7 = 9. The Quadratic Formula allows us to solve an equation of the form ax2 + bx + c = 0, where the coefficients a, b, and c are known. It can be used to calculate the two roots of the equation.
In this case, the Quadratic Formula would be used to calculate the value of x, which is the unknown in the equation 2×2 – 7 = 9. To do this, I would substitute the values of a, b and c into the formula. In this case, a = 2, b = 0 and c = -7. After simplifying and rearranging the equation, I would get x = 2, which is the solution to the equation.
The reason why I chose the Quadratic Formula to solve this equation is because it is a reliable and accurate method for solving equations with a degree of two. It is easy to understand and use, and it gives a precise answer. Plus, it is a very efficient method, which saves time.
So, if you are looking for an effective and efficient method to solve the equation 2×2 – 7 = 9, the Quadratic Formula is the way to go!