exam Maths Puzzle Numerical Ability

Determine whether the following equations have a solution or not? Justify your answer.

1. 2x2 - 10x + 25 = 0

2. 2x2 - 6x + 5 = 0

3. s2 - 4s + 4 = 0

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exam Other Question

Could someone please show me how to do this problem,
Graph the following function f(x)=(-1/3)x+2
There are no parentheses around the -1/3

Thank You Solve the rational equation

b+3/b + b+4/b+5 = 15/b^2+5b