Answer:
(7x + 5)(7x - 6)
Step-by-step explanation:
49x² - 7x - 30
49 is 7 x 7 , 30 is 2 x 3 x 5
49x² - 42x + 35x - 30
7x(7x - 6) + 5(7x - 6)
(7x + 5)(7x - 6)
A) f(x+1) = 6x^2 + 8x + 6
1) substitute the value of x as (x+1)
2) 2(3(x+1)^2 -2(x+1) +2)
3) 6(x^2 + 2x + 1)
4) 6x^2 + 8x + 6
B) f(3) = 46
1) simplify the expression first
2) 6x^2 -4x + 4
3) Now just substitute 3: 6(3)^2 -4(3) + 4
4) 6•9 - 12 + 4 = 46
I hope this helps :)
Answer:
you want to isolat U on one side, so subtract 9/-4 from both sides to end up with (9/-4) - 9 = u, then solve. (9/-4)-9 = -11.25, so -11.25 = u
0.00072 in scientific notation is 7.2x10^-4
