Question

simplify :3 a (5a - 7) + 3 and find the value for a= 2, a = -1​

Answer 1

Step-by-step explanation:

Substituting a = 2, we get,

$3(2)(5(2) - 7) + 3$

$= > (6)(10 - 7) + 3$

$= > (6)(3) + 3$

$= > 18 + 3 = 21$

Substituting a = -1, we get,

$3( - 1)(5( - 1) - 7) + 3$

$= > ( - 3)( - 5 - 7) + 3$

$= > ( - 3)( - 12) + 3$

$= > 36 + 3 = 39$

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Answer 2

Answer:

Hey Mate here is the answer

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