Question

Ajutați-mă va rog frumos ​

Answer 1

Răspuns:

Explicație pas cu pas:

Ex 7:

a) = x+16x+8² = (x+8)²

b) = (9x)²+18x+1² = (9x+1)²

c) = (7x)²+112x+8² = (7x+8)²

d) = (3x)²+6x+1² = (3x+1)²

e) = x²+x+(1/2)² = (x +1/2)²

f) = x²+2/3x+(1/3)² = (x+1/3)²

Ex 8:

a) = 4²-8x+x² = (4-x)²

b) = 4(25-10x+x²) = 4(5-x)²

c) = a²-20a+10² = (a-10)²

d) = x²-3x+(3/2)² = (x-3/2)²

e) = x²-5x+(5/2)² = (x-5/2)²

f) = (3x)²-42x+7² = (3x-7)²