exam Maths Puzzle Numerical Ability

Area of a sail. A triangular sail has an area of x^2 + 5x + 6 square meters and a height of x + 3 meters. Find the length of the sail’s base.

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exam Other Question
given: f(x)=x^2+3 and g(x)(sqrt)2-x find f o g (x)

a.5-x
b. 1-x
c. (sqrt) 5-x^3
d. 7+x^2

Thanks What is always true of the diagonals of a parallelogram?