Tolong yg bisa jawab ya..
- (4x+xy-y²)+(3y²-3x+5xy)
- (8x²-x+1)-(4x²-y+3x-11)
- (4x+xy-y²)+(3y²-3x+5xy)
- (8x²-x+1)-(4x²-y+3x-11)
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~ 4x - 3x + xy + 5xy - y² + 3y²
= x + 6xy + 2y²
~ 8x² - x + 1 - 4x² + y - 3x + 11
= 8x² - 4x² - x - 3x + 1 + 11 + y
= 4x² - 4x + 12 + y
untuk nomor 2 didepan kurung ada " - " (tanda negatif) harus dikali kedalam