2+1=3 is not an identity property. The rest are because the value equals itself after dividing, subtracting, and multiplying.
Answer:
f(-3) = -3
Step-by-step explanation:
replace x with -3 and solve
(-3)^4 = 81
3(-3)^3 = -81
(-3)^2 = 9
6 = 6
now solve
x^4 + 3x^3 – x^2 + 6
81 + (-81) - 9 + 6
-9 + 6
-3
Answer:
4x^2-9x+3
Step-by-step explanation:
(4x^2 −2x−6)- (7x−9)
=(4x^2-2x-6-7x+9)
=(4x^2-9x+3)
4x^2-9x+3is the answer
Answer:
![- 6 {x}^{2} + 26xy - 28 {y}^{2}](https://tex.z-dn.net/?f=%20-%206%20%7Bx%7D%5E%7B2%7D%20%20%2B%2026xy%20-%2028%20%7By%7D%5E%7B2%7D%20)
Step-by-step explanation:
The given expresion is:
(−2x + 4y)(3x − 7y)
We expand using the distributive property: (a+b)(c+d)=a(c+d)+b(c+d)
We apply this property to get:
![( - 2x + 4y)(3x - 7y) = - 2x \times(3x - 7y) + 4y(3x - 7y)](https://tex.z-dn.net/?f=%28%20-%202x%20%2B%204y%29%283x%20-%207y%29%20%3D%20%20-%202x%20%5Ctimes%283x%20%20-%207y%29%20%2B%204y%283x%20-%207y%29)
We expand further to obtain:
![- 6 {x}^{2} + 14xy + 12xy - 28 {y}^{2}](https://tex.z-dn.net/?f=%20-%206%20%7Bx%7D%5E%7B2%7D%20%20%2B%2014xy%20%2B%2012xy%20-%2028%20%7By%7D%5E%7B2%7D%20)
![- 6 {x}^{2} + 26xy - 28{y}^{2}](https://tex.z-dn.net/?f=%20-%206%20%7Bx%7D%5E%7B2%7D%20%20%2B%2026xy%20%20-%2028%7By%7D%5E%7B2%7D%20)