Răspuns:
Explicație pas cu pas:
a) (4x + 9)(4x-9) = 16x²-81
(a+b)(a-b) = a²-b²
b) (x-√5)² = x²-2x√5 +5
(a-b)² = a²-2ab+b²
c) (x+2√2)² = x²+2·x·2√2+(2√2)² = x²+4x√2+8
(a+b)² = a²+2ab+b²
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d) (√3x-1)² = 3x²-2√3x+1
e) (√2a-3)² = 2a²-6a√2+9
(x+√7)² = x²+2x√7+7
(2x-√5)² = 4x²-4x√5+5
(2x-√3)² = 4x²-4x√3+3
(√3x-1)² = 3x²-2√3x+1
(2x+3√3)² = 4x²+12√3x+27
(3x -√2)² = 9x²-6x√2+2
(√3x - √2)² = 3x²-2x√6+2