exam Maths Puzzle Numerical Ability

Solve the system of nonlinear equations:
y = x^3 - 4x
y = -1/2x^2 + 2

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exam Other Question

simplify:

-7p^8q^8+4p^8q-5pq^8-(7p^8q^8-5p^8q+8pq^8) Will you help me: Express each decimal as a rational number a/b, where a and b are integers and b are not equal to 0. 6.52828 (28 repeating.) thanks!