Question

(5x+9y3)2
(1-x3)2
(9x+12y4)2
[6p4+t3]2

Answer 1

(5x+9y3)²
(5x)² +2.5x.9y³ +(9y³)²
25x² +90xy³ +81y^6

(1-x3)²
1² -2.1.x³ +(x³)²
1 - 2x³ + x^6

(9x+12y4)²
(9x)² +2.9x.12y⁴ + (12y⁴)²
81x² +324xy⁴ + 144y^8

[6p4+t3]²
(6p⁴)² + 2.6p⁴.t³ + (t³)²
36p^8 + 12p⁴t³ + t^6