Question

2 Efectuați, utilizând formula (a - b)²=a² - 2ab + b²: a (x - 2)²; b (a − 1)²; c (4- b)²; e (2a-b)²: f (x - 4y)²; g (5a - 6m)²: 1(2-3√2); 1 (2√3-3√6): k (5√2x-3√3y): 7 2 Tu 2a 3 4 2 d (5-2c)³: h (2z-100): 1 (3√14x-2√21y): ​

Answer 1

Răspuns:

a (x-2)^2=x^2-4x+4

b (a-1)^2=a^2-2a+1

c (4-b)^2=16-8b+b^2

e (2a-b)^2=4a^2-4ab+b^2

f (x-4y)^2=x^2-8xy+16y^2

g (5a-6m)^2=25a^2-60am+36m^2