Completing The Square — Unit test Answers

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (–1 + i) + (21 + 5i)?

What is the first step in solving the quadratic equation -5x2+8=133?

Which values of x and y would make the following expression represent a real number?(4 + 5i)(x + yi)

Which equation results from taking the square root of both sides of (x – 9)2 = 81?

The area of a triangle is 1,440 cm2. The base of the triangle is 5 times the height. What is the height of the triangle?

Solve for in the equation .

Use completing the square to solve for in the equation .

Isoke is solving the quadratic equation by completing the square.10x2+40x-13=010x2+40x=13A(x2+4x)=13

The length of a rectangle is three times the width. The area of the rectangle is 108 sq in. What is the width of the rectangle?

What is the distance from the origin to point P graphed on the complex plane below?

What is the absolute value of the complex number ?

What are the zeros of the quadratic function f(x) = 2x2 – 10x – 3?

Which are the roots of the quadratic function f(q) = q2 – 125? Select two options.

In which quadrant is the number 6 – 8i located on the complex plane?

Which equation demonstrates the multiplicative identity property?

The sum of two complex numbers, where the real numbers do not equal zero, results in a sum of 34i. Which statement must be true about the complex numbers?

Which is a zero of the quadratic function f(x) = 9x2 – 54x – 19?

Use the zero product property to find the solutions to the equation x2 + x – 30 = 12.

Use the zero product property to find the solutions to the equation 6x2 – 5x = 56.

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4?