exam Maths Puzzle Numerical Ability

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What is the difference between 2x^2+4xy-3 and x^2xy-4>

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exam Other Question

<a is complementary to <c. If <a=2x-10 and <c=4x+10, find the m<a and m<c. An oblique triangle has a side a= 6.5 in , side b = 6.0 in. and side c =3.5 in Find the value of angle A.