11) (5+√3)². It's of the form of (a+b)² = a²+2ab+b² ==> 28+10√3
12) (9-√5)(9+√5) .It's of the form of (a-b)(a+b) =a² -b² =49-5 = 44
13) The conjugate of (a+√b) is (a-√b). Multiply numerator & denominator by the conjugate: 6(8+√2)/(8-√2)(8+√2) = (48+6√2)/(64-4) =48+6√2)/60 Simplify by 6 ===> (8+√2)/10
14) (2+√2) /(1-√2). Multiply by the conjugate of the denominator: (2+√2)(1+√2)/(1-√2)(1+√2) = . (4+3√2) / 1-2 = - (4+3√2)= -4-3√2
The correct answer is) D. Because on the graph you can see that it increases by 25 each day which follows the equation Y=25x
The reason for this is because she reads 25 pages a night Meaning that the total number of pages Jacqueline has read (Variable Y) = 25 pages a night (x)
