I'll give you a hint. <u><em>You had to used pemdas stands for: p-parenthesis, e-exponents, m-multiply, d-divide, a-add, and s-subtracting.</em></u>
First you had to calculate with parenthesis first.
Then you add and subtract from left to right.
Final answer 
Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie
Complete the square for x and y.
7x^2 + 3y^2 - 28x - 12y = -19
7x^2 - 28x + 3y^2 - 12y = -19
7(x^2 - 4x) + 3(y^2 - 4y) = -19
7(x^2 - 4x + 4) + 3(y^2 - 4y + 4) = -19 + 28 + 12
7(x - 2)^2 + 3(y - 2)^2 = 21
Answer: It should equal 10
Step-by-step explanation: X=10
Answer:
This is late you said it was due 5 min. yet I this was posted 5 hours. No one can help now.
Step-by-step explanation:
