Question

3y2 - 2x - 12 if x =-1, y=3

Answer 1

Answer:

17

Step-by-step explanation:

To evaluate the expression substitute x = - 1 and y = 3 into it

3(- 3)² - 2(- 1) - 12

= 3 × 9 + 2 - 12 = 27 + 2 - 12 = 29 - 12 = 17

Answer 2

$\text{Hey there!}$

$3\text{y}^2-2\text{x}- 12, \text{ if x = -1 \& y = 3}$

$\text{Your equation is now:\ }3(3)^2 - (-1) - 12$

$\text{You can solve this by doing PEMDAS (Parentheses, Exponents, Multiplication}\\\text{Division, Addition, Subtraction), There's other methods too!}$

$\text{We can eliminate \bf{Parentheses}}\text{ because we don't have any in here.}\\\text{Check for \bf{Exponents}}\text{ we have it, so we can use that first to solve.}$

$3^2 = 3\times3 = \bf{9}$

$\text{New equation: 3(9) - 2(-1) - 12}$

$\text{Thirdly, check to see if you have any \bf{multiplication.}}\\\text{ We have it, so that is our next step.}$

$\text{3(9) = 27}$

$\text{2(-1) = -1}$

$\text{Our new equation is: 27 - (-2) - 12}$

$\text{Fourthly, let's check to see if we have any\bf{ division}.}\text{ We don't have}\\\text{ any so move on to the next on which is \bf{addition.}}\\\text{We don't have any of that either. Move on to the last part of it, which is}}\\\text{\bf{subtraction.}}\text{ We have that one. So let's use it for our next step. }$

$\text{27 - (-2) - 12}$

$\text{27 - (-2) = 27 + 2 = 29}$

$\text{29 - 12 = \bf{17}}$

$\boxed{\boxed{\bf{Answer: 17}}}\checkmark$

$\text{Good luck on your assignment and enjoy your day!}$

~$\frak{LoveYourselfFirst:)}$