exam Maths Puzzle Numerical Ability

Could you kindly help me.

Write a quadratic equation that has the given pair of solutions.
1) -4 and 5
2) 2 - √3 and 2 + √3

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exam Other Question

could someone help me solve these equations and write the result in scientific notation..

(3.86x10^15)*(2.15x10^-7)

and

(3.86x10^15)/(4.15x10^-7)

Thanks in advance for your help! What are complementary and supplementary angles?