Question

Simplify 3a(a + 5) -2a( a - 3) - 7(9-a)​

Answer 1

Answer:

a^2 -32+7a

Step-by-step explanation:

=3a^2 +15 - 2a^2 + 6 - 63 + 7a

= (3-2)a^2 + ( 15+6-63) +7a

=a^2 + (21-63) + 7a

= a^2 -(63-21) +7a

= a ^2 -32 +7a

Answer 2

Answer:

28a+a^2-63

Step-by-step explanation: