exam Maths Puzzle Numerical Ability

62.) x^2+x+sqrt x^2+x -2=0
68.) b^4+13b^2+36=0

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exam Other Question

the interest rate on an auto loan in may was 12 3/8%. by september the rate was up to 14 1/4%. how many percentage points did the rate increase over the period?

thank you for yo polynomial f(x) is divided by x-3 equaling quotient of x^2+3x-5 with remandier of 2. Find f(3)?