It should evaluate the middle term -2*6/2 first.
Answer:
36/6 and 6/1 is equivalent
20/5 and 3/1 is not equivalent
18/3 and 9/1 is not equivalent
35/7 and 5/1 is equivalent
32/4 and 8/1 is equivalent
100/10 and 5/1 is not equivalent.
Step-by-step explanation:
36 divided by 6 is 6.
20 divided by 5 is 4.
18 divided by 3 is 6.
35 divers by 7 is 5.
32 divided by 4 is 8.
100 divided by 10 is 10.
Answer:
4.9000
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<span>I assume that the x is squared
(on Yahoo!Answers, we often use the caret ^ to show a power or an exponent)
(think of it as a tiny arrow pointing up, showing that the following number should be seen as if it were raised above the line)
2(x^2 + 5) = 60
Can it be x = 5 ?
we test:
2(5^2 + 5) = 2(25 + 5) = 2(30) = 60
it works, therefore x = 5 is a solution.
Can it be x = -5?
we test again:
2[(-5)^2 + 5) = 2(25 + 5) = 2(30) = 60
it works, therefore x = -5 is also a solution.
The way you did it, there could be some confusion between step 4 and step 5 (because you do not explain how you go from 4 to 5).
If you simply "take the square root" on both sides, someone could argue that the "principal" square root of a number is the positive value (+5 only, not -5). On the other hand, if you state:
(after step 4), we look for all values that give 25 when they are squared, then -5 is allowed.
The way the conjecture is stated at the beginning, the easiest way is to check both values to find out that, yes, they are both valid solutions.</span>
