exam Maths Puzzle Numerical Ability

1. x^2+6x-5=0

2. 4x^2 + 20x = 0

3. 3x^2 + 10x + 8 = -17x - 2

4. x^2 + 3x - 40 = 0

5. p^2 + 15p + 25 = 6p + 5

6. x^2 = 10x - 24

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exam Other Question

1) y=x
y=-x

2)y=-x
y=x+9

i have 12 problems just like this, and the instuctions
in the book i dont get. pleezzz help thank you
how would you simplify

-5+√3/1-√2