Step 1: move all terms to one side
7 + 2x^2 - 10x = 0
Step 2: Use the quadratic formula
X = 10 + 2(square root of 11). 10-2 _/—-11
————————————. ——————
4. , 4
Step 3: Simplify solutions
X= 5 + (square root of 11) 5 - (square root 11)
——————————- , ————————
2. 2
4x + 5 5x 4x + 5 - 5x -x + 5
---------------- - ---------------- = ------------------ = -------------------
6x^2 - x - 12 6x^2 - x - 12 6x^2 - x - 12 6x^2 - x - 12
Answer:
Step-by-step explanation:
<u>Use the law of cosines:</u>
<u>Substitute the values:</u>