Bài 2: Tìm x, biếta) 6x (3x + 5) –2x (9x –2) = 17b) 2x(3x -1) –3x(2x + 11) -70 = 0c) (3x –1)(2x + 7) –(x + 1)(6x –5) = 16d) (2x + 3)2–(2x + 1)(2x –1) = 22e) (4x + 3) (4x –3) –(4x –5)2= 46f) 25x2–9 = 0Bài 3: Giải các phương trình sau:a) xxx2( 2) –( –3)( 3) 6−+ =b) xxx2( 3) (4 )(4– ) 10+ + +=c) xxx2( 4) (1– )(1 ) 7+ ++ =d) xxx2( –4) –( –2)( 2) 6+=e) xxx24( –3) –(2 –1)(2 1) 10+=f) xxx225( 3) (1–5 )(1 5 ) 8+ ++ =g) xxx29( 1) –(3 –2)(3 2) 10++ =h) xxx24( –1) (2 –1)(2 1) 3−++ = −Bài 4:Tìm x, biếta) (x + 8)(x + 6) -x2= 104b) 6x2-(2x -3)(3x + 2) –1 = 0c) (x + 4)2–(x + 1)(x -1) = 16d) (10x + 9)x –(5x -1)(2x + 3) = 8e) (2x -1)2+ (x + 3)2–5(x + 7)(x –7) = 0f) x(x + 1) (x + 6) –x3= 5x

y=x+2 hope this jdjxhdnzbdjdo

ad = ae + ed = y + 7

similar triangles therefor

ac/ab = ad/ae

6/4 = (y + 7) / y

cross multiply

6y = 4(y + 7)

6y = 4y + 28

2y = 28

y = 14

step-by-step explanation:

triangle abc is reflected on the line x=-6.5 then reflected again on the x axis

step-by-step explanation:

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1