exam Maths Puzzle Numerical Ability

Multiply the fraction

2^2 - x - 3
Divided by
3x^2 + 7x + 4

Minus

3x^2 - 11x - 20
Divided by
4x^2 -9

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exam Other Question

The chi-square distribution is
A) positively skewed.
B) negatively skewed.
C) normally distributed.
D) negatively or positively skewed.
E) none of the above. Can someone help me on this problem?

I need to add: 3/11 + 9/11 + 1/11 in the simplest form.

Thanks,
Sher