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kkingstone7062
06.10.2020 •
Mathematics
Solve b + (-24) > 15
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Ответ:
b + (-24) > 15
b-24+24>15+24
b>39
Ответ:
b > 39
Step-by-step explanation:
isolate b
b - 24 > 15
+24 > +24
b > 39
Remember you only flip the inequality sign when you multiply or divide by a negative number.Ответ:
4x^2+24x=4
Step 1:
make the coefficient of x² as 1, divide both sides by 4
x² +6x =1
Step 2:
take half of coefficient of x, square it and add it to both sides
half of 6 is 3 and 3²=9, so add 9 to both sides
x² +6x+9=1+9
x²+6x+3²=10
(x+3)²=10
now when we take square root we will get both + and - √10 on right side
x+3= +√10
x+3=-√10
solving for x
x=+√10-3
x=-√10-3