Quadratic Equations - part 1

Factored -> Standard

100

Write an equivalent expression in standard form:

(x-9)(x+9)

x^2-81

200

Write an equivalent expression in standard form:

(x-4)(x+3)

x^2-1x-12

300

Write an equivalent expression in standard form:

(2x-1)(x+6)

2x^2+11x-6

400

Write an equivalent expression in standard form:

(x+7)^2

x^2+14x+49

Standard -> Factored

100

Write an equivalent expression in factored form:

2x^2+2x-12

(x-2)(2x+6)

200

Write an equivalent expression in factored form:

4x^2-20x

4x(x-5)

300

Write an equivalent expression in factored form:

3x^2-13x-10

(x-5)(3x-2)

400

Write an equivalent expression in factored form:

100x^2-121

(10x-11)(10x+11)

Find the x intercepts

100

Find the x intercepts:

f(x)=(2x-3)(x+1)

(-1,0) and (1.5,0)

200

Find the x intercepts:

g(x)=x^2+3x-4

(4,0) and (1,0)

300

The function below models a baseball thrown up into the air. j(x) represents height and x represents seconds in the air. When will the ball reach the ground?

j(x)=(-x+8)(3x+24)

After 8 seconds

400

Daily Double!

What is Ms. Herrmann's first name?

Nell

Solve for x

100

x^2-10x+21

x=7 and x=3

200

3x^2-x-10

x=2 and x=-5/3

300

2x^2+22x=-56

x=-7 and x=-4

400

Daily Double #2

This year is 2025 which is a perfect square. What is this year's square root?

45