Answer:
<h2>15</h2>
Step-by-step explanation:
2 + 1/3 = 2 1/3 = 7/3
35 = 35/1
35/1 : 7/3 = 35/1 × 3/7 = 105/7 = 15
Add 10 to both sides to cancel out the 10
divide 2 on both sides
X= 18
Answer: x^2 - 14x + 49
Explanation:
1) Divide the coefficient of x by 2:
14 / 2 = 7
2) so you have to add 7^2 = 49
x^2 - 14x + 49
3) that trinomial is equivalent to:
=> (x - 7)^2
4) prove that using the formula (a - b)^2 = a^2 - 2ab + b^2
(x - 7)^2 = x^2 - 14x + 49
Then you have to add 49 to complete the square. and form a perfect square trinomial.
