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Maths Puzzle
Numerical Ability
The question is 4x^2 - 20 = 5. I know that I have done these recently but I am drawing a blank.
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Express the same function of a positive acute angle of sin -315 degrees not using a calculator.
What is a algebraic expression and variable exression?
There isn't a difference. The correct term to use is algebraic expression. The difference between an expression and an a