(3/7+3)x7
10
(3 root 7) squared = (3 root 7) (3 root 7) = (3x 3) ( sq root 7 x 7) = 9 x sq root 49 = 9 x 7 = 63
When x = 7, f(x) = 3*(4-x) = 3*(-3) = -9
It is: 4 x 7 = 28
(3/7+3)x7
(3/7+3)x7
(3/7+3)x7
10
7^2 + 3^2 = 58
Depends on where the parentheses are. X(7-4) + X7 + 4 = 10X + 4 X(7-4) + X(7+4) = 14X
it`s 81. Anything squared means timed the number you`re timing it with. For example. 7 squared= 7 times 7 3 squared= 3 times 3. Hope I helped! (^_^)
There is a formula for the "difference of squares." In this case, the answer is (x7 - 7)(x7 + 7)
2x7 = 14 x7 = 7 3x7 = 3*7 = 21
210 minutes 7/2 hours = 3 and 1/2 hours
3 + 43 = 46 7 squared = 49 46 + 49 = 95
7 + 7 + 7 + 7 = 28