Evaluate One-Variable Expressions
4x - 5 + x for x = 4
4*4 - 5 + 4 = 15
3z + 8z + y ; z=1, y=6
17
(2x² - 4)+(x² + 3x - 3)
What is 3x²+3x-7.
(2x²-1)-(x²-3)
What is x²-2.
Write in words: 8/n + 11
The quotient of 8 and a number, increased by 11. 8 divided by a number, plus 11.
2(a + 5) for a = 3
2 * (3 + 5) = 16
4p + 2(r - p) ; r=3, p=2
10
(15x²-7)+(-10x²)
What is (5x²-7).
(5x²-2)+(-x²)
What is 4x²-2.
Write an algebraic expression: The product of 3 and a number, increased by 8.
3n + 8
3(2y - 1) + 6 for y = 2
3(2 (2) - 1) + 6 = 15
14 + 2q + 9s; q=5, s=2
42
(2x² - 4)+(x² + 3x - 3)
What is 3x²+3x-7.
(6x²-x+4)+(x²+3x-3)
What is 7x²+2x+1.
Write an algebraic expression: 4 less than the sum of a number and 15.
(n + 15) - 4
3(6 - b) + 7 - 2b for b = 4
3(6 - 4) + 7 - 2(4) = 5
5d^2 + 2k; d=2, k=3
26
11x²+x-6+x²+3x-8
What is 12x²+4x-14.
(11x²+x-6)-(x²+3x-8)
What is 10x²-2x+2.
Write an algebraic expression: Twice the difference of a number and 10.
2(m - 10)
n/4 + 2n - 3 for n = 8
8/4 + 2(8) - 3 = 15
8 + 3(2k + 4e) - 5e + 6k - 5; k=1, e=2
29
(2x3-x)+(-x3+3x-3)
What is x3-2x-3.
(2x3-x2+4x+1)-(-x3+3x2-3x+3)
What is 3x3-4x2+7x-2.
Write an expression to model the situation: Half the sum of a number and 10
(x+10)/2