Question

(4x−1)(4x+1)−(2x−2)(3x+1) при x=3,7
Напишите ответ

Answer 1

16x^2-4x+4x-1-(6x^2-6x+2x-2)=10x^2-1+4x+2=10x^2+4x+1      x=3.7
10*13.69+4*3.7+1=152.7