Question

Tolong dibantu ya no 5 nya aja,,

Answer 1

5a) {y - (3y/y+2)} × {(2/y) + y+3}
= (y(y+2) - 3y). (2 + y(y) + 3(y)
------------------ × ------------------
(y + 2). (y)
= (y²+2y-3y²). (2 + y² + 3y)
------------------ × -----------------
(y+2). (y)
= (y)(-2y + 2) (y+2)(y+1)
------------------ × ---------------
(y+2). (y)
= (-2y+2)(y+1)
= -2y²+2y-2y+2
= -2y²+2
= 2(-y²+1)
b) (x² + 5x - 6). (4x² + 4x + 1)
------------------ × ------------------
(4x² - 2). (2x² - x - 1)
= (x + 6)(x - 1). (2x+1)(2x+1)
------------------× -------------------
2(x - 1)(x + 1). (2x + 1)(x - 1)
= (x + 6). (2x + 1)
------------- × -------------
2(x + 1). (x - 1)
= (x + 6)(2x + 1)
--------------------
2(x + 1)(x - 1)
= 2x² + 9x + 6
-------------------
2x² - 2