exam Maths Puzzle Numerical Ability

Solve.

(1)x squared - 7x - 1 = 0

(2)x squared - 4x - 4 = 0

(3)6x squared = 9x

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exam Other Question

Mr. Sable invested $5000 in a mortgage that pays 9% interest annually. He bought bonds paying 4.5% interest annually. His total annual income is 6% of his total investment. How much did he invest in the bonds. What does it mean to find the vertex, intercepts, and sketch of y=-x2-6x+1?