exam
Maths Puzzle
Numerical Ability
I need help solving and check for extraneous solutions:
√y+9=1
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exam Other Question
Use one unit multiplier to convert 20 inches to centimeters (2.54 cm = 1 in.)
x^3+4x+5/x+1
the answer is x^2-x+5
my question is how did solve for this?