Answer:
248
Step-by-step explanation:
Given: 200 -42 + 9.10
First we have to multiply 9 and 10, we get
= 200 - 42 + 90
Now we have to the positive numbers 200 and 90
= 290 - 42
Subtract 42 from 200, we get
= 248
Answer : 248
Hope you will understand the concept.
Thank you.
Answer:
Ok and...
Step-by-step explanation:
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Answer:
c is true
Step-by-step explanation:
To find the roots of the quadratic equation x^2 + 2x + 5 = 0 is the same as solving it for x.
The formula to get x₁ and x₂ is: x₁,x₂=(-b⁺/₋√(b²-4ac))/(2a) where in our case a=1, b=2 and c=5.
Lets input the numbers:
x₁,x₂= (-2⁺/₋√(2²-4*1*5))/(2*1) = (-2⁺/₋√(4-20))/2, = (-2⁺/₋√(-16))/2
We see that we have a minus sign under the square root so the solutions or roots for our quadratic equation are going to be complex numbers:
x₁ = (-2+4i)/2 = -1+2i
x₂ = (-2-4i)/2 = -1-2i
So our roots are complex and are: x₁= -1+2i and x₂= -1-2i.