Question

(x²+ x)² + 4(x² + x) – 21​

Answer 1

Answer:

Step-by-step explanation:

(x²+x)²+4(x²+x)-21

(x^4+2(x²)(x)+x²)+4(x²+x)-21

(x^4+2x³+x²+4x²+4x-21)

(x^4+2x³+5x²+4x-21)

x(x³+2x²+5x+4)-21