Linear Equations II
Determine whether (-4,7) is a solution of the system x + y = 3, and 5x - y = -27.
What is true?
Determine if -1 is a solution to the inequality: -3 > -9 - 2x.
What is yes?
Factor x3 - x2 - 30x.
Factor 12x2 - 40x - 32.
What is 4(x-4)(3x+2)?
Simplify: 24/30y.
What is 4/5y?
Determine whether the point (3,-1) is a solution of the system 3x - 4y = 13, and 6x - 8y = 26.
What is true?
Solve 4x - 1 ≥ 5x - 7.
What is (-∞, 6]?
Factor x2 - 2xy - 48y2.
Factor a2 + 25 + 10a.
What is (a+5)2?
Simply f(t) = 7t2 + 21t/14t.
What is t + 3/2?
Solve the system: 2x + y = 6, and 3x + 4y = 4.
What is (4,-2)?
Solve 16 - 7y ≥ 10y - 4.
What is (-∞, 20/17]?
Factor 9x2y2 + 5xy - 4.
Solve 5b2 = 10b.
What is 0, and 2?
Simplify, and list all restrictions on the domain: g(x) = x2 + 3x - 10/2x2 - 3x - 2.
What is g(x) = x + 5/2x + 1, x≠ 1/2 and 2?
Solve the system y = -3x + 5, and y = -3x - 2.
What is no solution?
Let f(x) = 7 - 3x and g(x) = 2x - 3. Find all values of x for which f(x) ≤ g(x).
What is [2, ∞)?
Factor 25a2 + 30ab + 9b2.
What is (5a + 3b)2?
Let f(x) = 3x3 - 30x and g(x) = ax2. Find all x-values for which f(x)=g(x).
What is 0, -2, and 5?
Simplify 4 - t/ 3t - 12.
What is -1/3?
Solve the system a - 1/2c = 6, and c + 2a = 8.
What is (5,-2)?
Solve 5[3m - (m + 4)] > -2(m - 4).
What is (7/3,∞)?
Factor -18y2 + y3 + 81y.
What is y(y-9)2?
Find the domain of f if f(x) = x - 2/x2 + 2y - 15.
What is (-∞,-5)∪(-5,3)∪(3,∞)?
Divide, and simplify if possible: x - 2/x + 1 ÷ x + 5/ x - 3.
What is (x - 2)(x - 3)/(x + 1)(x + 5)?