What is 5 + 3?
Solve this linear equation 7k = 12 + 3k
First you eliminate the 3k on the 12 side by subtracting 3k. Then moving the 3k to the 7k by way of subtraction. 7k - 3k = 12 Then solve 7k-3k = 4k then divide by 4 on both sides to solve for k. 4/4k = 12/4 = k = 3
Using the FOIL Method what is the equation for (x^2+ 7)(x^3 + 3x + 5)
FOIL= First, Outer, Inner, Last so the answer would be x^5 + 3x^3 + 5x ^2 + 7x^3 + 35 and simplifying that you get x^5 + 10x^3 +5x^2 + 35