Lavend3r1489
Lavend3r1489 Lavend3r1489
  • 26-05-2022
  • Mathematics
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(x + a)(x + 3a) = x ^ 2 + bx + 75​

x ax 3a x 2 bx 75 class=

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Аноним Аноним
  • 26-05-2022

(x+a)(x+3a)= x²+bx+75

x²+4a+3a²=x²+bx+75

by comparing 3a²=75 and b= 4a

a= ±5

possible values of b= ±20

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