Table of Contents
What is the rule for rearranging equations?
RULE #1: you can add, subtract, multiply and divide by anything, as long as you do the same thing to both sides of the equals sign.
Can you flip both sides of an equation?
Yes you can as long as both sides are non-zero and you flip all from both of them.
How do you rearrange algebraic terms?
Rearranging equations
- For example,
- To rearrange the equation so that it is written as take each term and move to the other side of the equal sign using the opposite operation until you only have.
- e.g. Rearrange to make the subject of the equation.
- Take to the other side of the equal sign by adding to both sides.
Is a square root always plus or minus some value?
Why some people say it’s true: That’s exactly what I was taught in school: when you take a square root, the answer is always “plus or minus” some value. Why some people say it’s false: When you square x,x,x, it becomes positive no matter what it was before; then, when you take the square root, it’s still positive.
Why is the square root of x^2x^2 equal to 5?
The ± \\pm ± is applied this way precisely because the square root is limited in its range to only positive values, whereas the function x 2 x^2 x 2 has a domain of both positive and negative values. But the evaluation of the square root itself is simply 5.
Is the square root of a number always positive?
Why some people say it’s true: That’s exactly what I was taught in school: when you take a square root, the answer is always “plus or minus” some value. x, x, it becomes positive no matter what it was before; then, when you take the square root, it’s still positive.
How do you subtract x² and Y² from y2 – x²?
X² and Y² may be subtracted from Y² – X² separately or together without altering the result. V. A coefficient placed before any bracket indicates that every term of the expression within the bracket is to be multiplied by that coefficient. which can be factorised into 2 (Y+X) (Y-X) .