Subtract the sum of ( 8a – 6a2 + 9 ) and (-16a -10 + 9a2) from -3

1.	Subtract the sum of ( 8a – 6a2 + 9 ) and (-16a -10 + 9a2) from -3
Answer» Step-by-step explanation: 8a - 6a^2 + 9 ----- ( 1 ) - 16a + 9a^2 - 10 ------ ( 2 ) Multiplying 1 equation by 9 and 2 equation by 6 72a - 54a^2 + 81 ------ ( 3 ) - 96A + 54a^2 - 60 ------ ( 4 ) subtract equation 4 by 3 - 96a + 54a^2 = - 60 - 72a - 54a^2 = + 81 - 168a = 21 a = 21 - 168 a = 0.125 MARK ME AS BRILLIANT

Answer»

Step-by-step explanation:

8a - 6a^2 + 9 ----- ( 1 )

- 16a + 9a^2 - 10 ------ ( 2 )

Multiplying 1 equation by 9 and 2 equation by 6

72a - 54a^2 + 81 ------ ( 3 )

- 96A + 54a^2 - 60 ------ ( 4 )

subtract equation 4 by 3

- 96a + 54a^2 = - 60

- 72a - 54a^2 = + 81

- 168a = 21

a = 21

a = 0.125

MARK ME AS BRILLIANT