16. ( 3x - 5 ) ( 2x + 9 ) = 3x ( 2x + 9 ) -5 ( 2x + 9 )
= 6x² + 27x - 45
17 . ( 3y - 7 )²= ( 3y - 7 ) ( 3y - 7 )
= 9y ²- 21y - 21y - 49
= 9y² - 42y + 49
18. ( 8n- 4 ) ( n² + 9 ) = 8n ( n² + 9 ) -4 ( n² + 9 )
= 8n³ + 72n - 4n² + 36
= 8n³ - 4n² + 36
Answer:
Tama yung nasa taas
Step-by-step explanation:
Paki brainliest siya
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Answers & Comments
16. ( 3x - 5 ) ( 2x + 9 ) = 3x ( 2x + 9 ) -5 ( 2x + 9 )
= 6x² + 27x - 45
17 . ( 3y - 7 )²= ( 3y - 7 ) ( 3y - 7 )
= 9y ²- 21y - 21y - 49
= 9y² - 42y + 49
18. ( 8n- 4 ) ( n² + 9 ) = 8n ( n² + 9 ) -4 ( n² + 9 )
= 8n³ + 72n - 4n² + 36
= 8n³ - 4n² + 36
#MyOwnExplanation
Answer:
Tama yung nasa taas
Step-by-step explanation:
Paki brainliest siya