Jika (y+a)(y+b)=y²-49 dan a>b,maka nilai a-b adalaha.-14b.0c.7d.14
A.-14 karena a-b = -7-7 =-14
C. 7, karena a-b = 7 × -7 = -49
Jika (y+a)(y+b)=y²-49 dan a>b,maka nilai a-b adalaha.-14b.0c.7d.14
A.-14 karena a-b = -7-7 =-14
C. 7, karena a-b = 7 × -7 = -49