1) suku sejenis ab² dan 2ab²2) (6x - 7) + (4x² - 7x + 3) 6x - 7 + 4x² - 7x + 3 -x -4 + 4x²3) (m² - 5m + 4) - (m² - 7) m² - 5m + 4 - m² + 7 -5m + 11 4) -3x² + 5x -6x +10 -3x² -x + 10
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1) suku sejenis ab² dan 2ab²
2) (6x - 7) + (4x² - 7x + 3)
6x - 7 + 4x² - 7x + 3
-x -4 + 4x²
3) (m² - 5m + 4) - (m² - 7)
m² - 5m + 4 - m² + 7
-5m + 11
4) -3x² + 5x -6x +10
-3x² -x + 10
2. 6x-7+4x²-7x+3
= 6x-7x+4x²-7+3
= -x+4x²-4
3. m²-7-(m²-5m+4)
= m²-7-m²+5m-4
=m²-m²+5m-7-4
=5m-11
4. (-x-2)(3x-5)
= - 3x²+5x-6x+10
= - 3x²-x+10
5. (2x+5)²
=(2x+5)(2x+5)
= 4x²+10x+10x+25
= 4x²+20x+25