BENTUK ALJABAR PNJUMLAHAN DAN PENGURANGAN SOAL:
1.-4x²+5xy dan 4X²-4xy
1.-4x²+5xy dan 4X²-4xy
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-4x² + 5xy dan 4x² - 4xy
= -4x² + 5xy + 4x² - 4xy
= -4x² + 4x² + 5xy - 4xy
= xy
Untuk pengurangan :
-4x² + 5xy dan 4x² - 4xy
= -4x² + 5xy - (4x² - 4xy)
= -4x² + 5xy - 4x² + 4xy
= -4x² - 4x² + 5xy + 4xy
= -8x² + 9xy