exam Maths Puzzle Numerical Ability

how do you express f(x)=-3(x-2)^2+5 in standard form? What formula do you use?

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exam Other Question

Simplify each expression

-5 + 5(x + 4) The measure of one angle of a triangle is five times that of a second angle, and the measure of an exterior angle at the third vertex is 120 degrees. What is the mesure of each angle of the triangle?