exam Maths Puzzle Numerical Ability

Solve the equation.

x^2 + 1x-20=0
Enter your solution(s) as numbers, separated by commas.

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exam Other Question

-7x<14 and 3x+2<8 Please help!!! State the domain of the following:?
a) f(x)=cuberoot (2x)-8

b) h(x)=-3x^2+5x-11

c) m(x)=5x^2-9

d) l(x)=5x-4

e) g(x)=7x+4x^2+4