a² - b² = (a - b)(a + b)
49x² - 9 = (7x)² - 3² = (7x - 3)(7x + 3)
It’s A i did the test myself..
Answer:
2(7y+4x+2z+1)
Step-by-step explanation:
Factor out the 2 from the expression
Replace f(x) with y:
y = 3x +2
interchange the variables:
x = 3y +2
switch the equation so the Y is on the left side:
3y +2 = x
subtract 2 from each side:
3y = x-2
divide each term by 3 to get y alone:
y = (x-2)/3
replace y with inverse of F(x) which is f^-1(x):
f^-1(x) = -(x-2)/3
Yes--- if it is a square BASED pyramid
