Your answer is C) 2a² + 2b²
To find this we can just expand the brackets of (a - b)² and (a + b)², and then combine like terms:
(a - b)² = (a - b)(a - b) = a² - 2ab + b²
(a + b)² = (a + b)(a + b) = a² + 2ab + b²
Then when you combine like terms, you get (a² + a²) + (-2ab + 2ab) + (b² + b²), so the ab terms cancel out and you get left with 2a² + 2b².
I hope this helps!
C : N : T
35 : 5 : 60
Which can the be simplified to:
7 : 1 : 12
Answer:
the answer is A
Step-by-step explanation:
this this is because a is inversely proportional to b so therefore k becomes an inverse variation
Answer:
f(-3)=9
Step-by-step explanation:
We want to find what f(x), or y is, when x is equal to -3.
f(x)=x^2
We want to find f(-3). Therefore, we can substitute -3 in for x.
f(-3)=(-3)^2
Evaluate the exponent. -3^2 is the same as -3*-3.
f(-3)=-3*-3
f(-3)=9
let x be the first number,
so, the next two are (x+ 1) and (x+2)
x + 2(x +1) = 62 - 3(x + 2)
x + 2x + 2 = 62 -3x - 6
3x + 2 = 62 - 3x - 6
3x + 3x = 62 - 6 - 2
6x = 54
x = 9
so, three consecutive integers are
9, 10, 11
Hope this helps!