Jawaban:
10) = 35 - ( 21 - 10 + 20 - 10) + 10
= 35 - ( 11 + 10) + 10
= 35 - 22 + 10
= 35 - 32
= 3 ( option A)
11) = 3x² + 2x + 5x²- 3y
= 8x² + 2x - 3y
( option A)
12) option D
13) 7a + 4b
8a -6b. -
-a + 10b
option C
14) = 2xy - 3yz + 4x² - 5yz + y² + 10xy
= 2xy + 10xy - 3yz - 5yz + 4x² + y²
= 12xy - 8yz + 4x² + y²
option D
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Verified answer
Jawaban:
10) = 35 - ( 21 - 10 + 20 - 10) + 10
= 35 - ( 11 + 10) + 10
= 35 - 22 + 10
= 35 - 32
= 3 ( option A)
11) = 3x² + 2x + 5x²- 3y
= 8x² + 2x - 3y
( option A)
12) option D
13) 7a + 4b
8a -6b. -
-a + 10b
option C
14) = 2xy - 3yz + 4x² - 5yz + y² + 10xy
= 2xy + 10xy - 3yz - 5yz + 4x² + y²
= 12xy - 8yz + 4x² + y²
option D