Question

3a ( 2 a – 7 ) – 3 ( a – 4 ) – 63 pls tell​

Answer 1

Answer:

Step-by-step explanation:

Given that,

3a ( 2a - 7 ) - 3 ( a - 4 ) - 63

= ( 6a² - 21a ) - ( 3a - 12 ) - 63

= 6a² - 21a - 3a + 12 - 63 ( ∵ - × + = - , - × - = + )

= 6a² - 24a - 51 is the answer. ( ∵ adding -21a -3a = - 24a, -63 + 12= - 51 )