exam Maths Puzzle Numerical Ability

complete the square
x^2+4x=6

x= ? and ?

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exam Other Question

The measure of the angles of a triangle are x,2x, and 3x. What are the measures of the angles of the triangle? suppose a ball is dropped from a height of 30ft. and that each bounce reaches 3/8 of the previous height. how high will the ball boucnce on the second bounce?