Please use " ^ " to denote exponentiation: <span>2x^2 + 3xy – 4y^2
Now let x=2 and y= -4:
2(2)^2 + 3(2)(-4) - 4(-4)^2 = 8 - 24 -4(16) = -16 - 4(16) = -5(16) = -80 (answer)</span>
Answer:
6
Step-by-step explanation:
BODMAS is the rule used.
Brackets
Of(multiplication)
Division
Multiplication
Addition
Subtraction
First simplify inside the brackets
![(7 - 4)(15 \div 5) - 3 \\ = 3 \times 3 - 3](https://tex.z-dn.net/?f=%287%20-%204%29%2815%20%5Cdiv%205%29%20-%203%20%5C%5C%20%20%3D%203%20%5Ctimes%203%20-%203)
Then the multiplication should be done
![9 - 3 \\ = 6](https://tex.z-dn.net/?f=9%20-%203%20%5C%5C%20%20%3D%206)
Answer:
AAA
Step-by-step explanation:
angles are equal because two pairs are of alternate angles and one of vertically opposite angles