exam Maths Puzzle Numerical Ability

Write the quadratic equation with a lead coefficient of 1 whose roots are (-1/2) and (4/5).

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exam Other Question

please help me to fin the answer of this question : ab+a-b=2001, find the value of a and b. if a and b are a real number. GIVEN: J AND K ARE MIDPOINTS OF LINE PR AND LINE QR
PROVE: PQJK IS A TRAPOZOID