Solve Algebraic Expression

(x² - y²) × (x² + y²) = ______

• 2x² + 2y²

• x⁴ - y⁴

• x⁴ + y⁴

• 2x⁴

Tags

CCSS.HSA.APR.C.4

Jenny is x years old.  Thomas is 3 times as old as she is.  Jenny is 5 years older than Alexis.
Find Alexis's age in terms of x.

• (x - 5) yr old

• (3 - x) yr old

• (15x - 3) yr old

• (x - 3) yr old

Tags

CCSS.6.EE.C.9

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4

• 2a + 2b + 4

• 8ab

• 4ab + 4

Tags

CCSS.7.EE.A.1

7x²-5x+3-2x²-2x-1

• 5x²-7x+2

• 9x²-3x+4

• 5x²+7x+2

• 6x²+2

Tags

CCSS.6.EE.A.3

-9x²+12x-15+4x²-7x+10

• -5x²+5x-5

• 5x²+5x+23

• 3x²-3x-5

• -10x²-5

Tags

CCSS.6.EE.A.3

6 fewer than twice t

• 6-2t

• 2t-6

• 2(t-6)

• t-2⋅6

Tags

CCSS.6.EE.A.2A

Simplify the expression: -5(x + 4)

• 5x + 4

• -5x + 4

• -5x - 20

• -5x + 20

Tags

CCSS.6.EE.A.3

Add the polynomials.
(2x + 5y) + (3x - 2y)

• 3x + 5y

• 5x + 3y

• 5x + 7y

• 7xy + 1xy

Tags

CCSS.HSA.APR.A.1

Factorise 3x²+12x

• 3x(x+4)

• 3(x²+4)

Factorise x²+4x

• x(x+4)

• 4x(x+1)