Відповіді АЛГЕБРА: 5.30

5.30

1) (4 – x^0,5)² + 8x^0,5 = 16 – 8x^0,5 + x + 8x^0,5 = 16 + x

2) (a12 + b14)² – (a12 – b14)² = a + 2a12b14 + b12 – a + 2a12b14 – b12 = 4a12b14

3) (2x14 + x13)² – 4x712 = 4x12 + 4x712 + x23 – 4x712 = 4x12 + x23

4) (a14 + 1)(a14 – 1)(a12 + 1) = (a12 – 1)(a12 + 1)= a – 1.