124-x=44658:54

213-a với m=5.     
234-a với p=6

review

1. now put object or subject pronouns in the gap

-at the moment I'm at university .I'm studying business .(11) .......... 's an interesting subject. two or my schoolfriend or at university with (12) ......... . our teachers are good but(13) .........give (14) .........a lot of work to do. next week (15) ............are all talking our fisrt exams . I want to get good marks in (16) .........

Tìm giá trị lớn nhất của: A=$\frac{-2}{3}{x}^2+4x-1$

e, (3x+1) ²-4(x-3) ²=0

now put object or subject pronouns in the gap

at the moment I'm at university .I'm studying business .(11) .......... 's an interesting subject. two or my schoolfriend or at university with (12) ......... . our teachers are good but(13) .........give (14) .........a lot of work to do. next week (15) ............are all talking our fisrt exams . I want to get good marks in (16) .........

Bµi 8. Tính giá trị của biểu thức

    a) P(x) = x7 - 80x6 + 80x5 - 80x4 +….+ 80x + 15       với x = 79.

    b) Q(x) = x14 - 10x13 + 10x12 - 10x11 + …+ 10x2 - 10x + 10 với x = 9.

    c) M(x) = x3 - 30x2 - 31x + 1                    với x = 31.

    d) N(x) = x5 - 15x4 + 16x3 - 29x2 + 13x          với x = 14.