Which expression is NOT equivalent to the other three? 9n - 6
3(3n - 2)
-6 + n + 9n
-3n ‒ 6 + 12n

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629

there should be an link icon on the bottom of the text box you get. it looks like a paperclip!

the answer is  

d.

121π mi^2

hope you got it chief