Question

(x+3)^2= ;(x-2)^2= ;(x+1)(x-1)= ;( rad3+rad 2)^2=​

Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

a) (x+3)² = x²+6x+9

b) (x-2)² = x²-4x+4

c) (x-1)(x+1) = x²-1

d) (√3+√2)² = √3²+2*√3*√2+√2² = 3+2√6+2 = 5+2√6

Pt. a), b) si d) am aplicat formula (a+b)² = a²+2ab+b².

Pt. c) am aplicat formula (a-b)(a+b) = a²-b².