Start by multiplying 1.2 and 7.5 which will give you 9.Then you have 9-8/4. so then you do 8 divided by 4 which is 2. so you have 9-2 and that equals 7.
Answer:
Step 2
Step-by-step explanation:
Meredith made a fatal mistake or error in step 2;
Any quadratic problem will always have two solutions. Therefore since, we only have one solution here, it is wrong. The mistake was incurred in step 2;
From the given problem ;
<u> Wrong right</u>
2(x + 4)² = 242
(x + 4)² = 121 Step 1
x+4=11 Step 2 x + 4 = ± 11
x = 7 Step 3 x + 4 = 11 or x + 4 = -11
x = 11- 4 or x = -11 - 4
x = 7 or -15
Answer:
x = i, mult 2; x = -i, mult 2
Step-by-step explanation:
First let's make a substitution to make this easier to factor.
Let u² = x⁴ and
u = x²
Now we can rewrite the polynomial as
u² +2u + 1 = 0
This factors easily into
(u + 1)(u + 1) = 0
By the Zero Product Property, either
u + 1 = 0 or u + 1 = 0
Putting back the x²:
x² + 1 = 0 or x² + 1 = 0
For the first one, even though they are the same:
x² = -1 so
x = ±√-1
Since that is not "allowed", we make the replacement of -1 = i²:
x = ±√i² so
x = ±i
For the second one, we need not repeat the whole process, but we find 2 more identical roots:
x = ±i
That means that the factors are
(x + i)(x - i)(x + i)(x - i) = 0
x = i, multiplicity 2 and
x = -i, multiplicity 2
216 / 360 divided by 6
36 / 60 divided by 6
6/10 divided by 2
3/5