Split it out and solve it !!
6(4a^2+11)- 13(3a-2a^2)-28
24a² + 66 - 39a +26a² - 28
50a² - 39a + 38
Answer:
Yes to both.
Step-by-step explanation:
It is true that

In fact, if you know that x/y=1, just multiply both sides by y to get x=y. On the other hand, if you know that x=y (and they are not zero), you can divide both sides by y to get x/y=1.
Since the two expressions are equivalent, you can always use Phil's or Don's expression, at will.
Step-by-step explanation:
Please write complete question
Answer:
40
Step-by-step explanation:
10r² + 3 = 813
10r² = 813 - 3
10r² = 810
r² = 810 ÷ 10
r² = 81
r = √81
r = <u>9</u>
So, the value of <em>r </em>is 9
<em>Hope </em><em>it </em><em>helpful </em><em>and </em><em>useful </em><em>:</em><em>)</em>