Numerical Ability

If a−b=3 and ab=10, find a²+b².

Solve for x: x/3 + x/4 = 7.

If 3x=4y and 5y=6z, find x:z.

Solve: x²−4=0.

If x+1/x=5, find x²+1/x².

If x−1/x=3, find x²+1/x².

Simplify (2x+3)².

If a:b=2:3, find a²:b².

Solve the system: 2x+y=11, x+y=7.

Find k for which x²+kx+9=0 has equal roots.

If x=3 is a root of x²−5x+k=0, find k.

Simplify (a³−b³)/(a−b).

If x+y=8 and xy=15, find x−y (x>y).

Solve: 4x−3=2x+9.

Find the roots of x²+x−6=0.

Sum of interior angles of a triangle?

Sum of interior angles of a quadrilateral?

Sum of interior angles of a pentagon?

Sum of interior angles of a hexagon?

Find each interior angle of a regular hexagon.

Find each interior angle of a regular pentagon.

In a right triangle, legs are 3 and 4. Find the hypotenuse.

In a right triangle, legs are 6 and 8. Find the hypotenuse.

Find the area of a triangle with base 10 and height 6.

Find the area of an equilateral triangle with side 4.