Subtract x^2 from both sides
x^2 + 3x - 7 = 5x + 39
Subtract 5x from both sides
x^2 - 2x - 7 = 39
Add 7 to both sides
x^2 - 2x = 46
Complete the square by adding (b/2)^2 to both sides, b = ( -2)
(-2/2) = -1, then square that (-1)^2 = 1
x^2 - 2x + 1 = 46 + 1
Simplify the expression by factoring
(x - 1)^2 = 47
Take square root on each side
x - 1 = (sqrt (47))
Solve for x
x = 1 + (sqrt (47))
Since 47 is prime, 47 cannot be broken down by the square root and this is the answer to your problem.
Answer:
<em>6.5</em>
Step-by-step explanation:
To perform this kind of exercise, it is necessary to replace the value indicated in each variable each time you find the variable in the equation.
If j=0.5 and k=0.25, replace the value of each variable.
now perform the indicated operations
Could you give us the figure please?
Answer:
Step-by-step explanation:
Least to greatest:
31% = 0.31 8/25 = 0.32 <u>1/3 = 0.33</u> 0.35
3/8 = 0.375 <u>2/5 = 0.4</u> 41% =0.41 1/2 = 0.5
1/4 = 0.25 28% = 0.28 21/50 = 0.42 <u> 0.425</u>
