Maya is solving the quadratic equation by completing the square.4x2 + 16x + 3 = 0What should Maya do first?Isolate the variable
2 answers:
Answer:
Isolate the constant
Step-by-step explanation:
Since, when we solve a quadratic equation,
We follow the following steps,
Step 1 : Move the constant term or isolate the constant term to the right side of the equation,
Step 2 : Make 1 as the coefficient of
Step 3 : Add the square of the half of the coefficient of x both sides of the equation.
Here the given quadratic equation is,
First step must be
That is, isolate the constant term,
Third option is correct.
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Answer:
Domain of y=: is x>=1
Interval notation: [1,∞)
Step-by-step explanation:
We have y=
1) The domain of a function is the set of x values for which the function is real and defined.
2) So, x-1 should be positive means x-1>=0, because fourth root of any negative value would be a complex number and not a real number.
3) Now we solve the inequality x-1>=0
4) Adding 1 to both sides of the inequality we get,
x-1+1 > = 0+1
5) Cancel out -1 and +1 from the left side
6) We get x>=1
It concludes that for the domain of the given function, the x value must be greater than or equal to 1