Question

x^4+8x^2+16
A) (x^2 + 4)
B) (x + 4)^2
C) (x^2 + 4)^2
D) (x^2 + 16)^2

Answer 1

${x}^{4} + 8 {x}^{2} + 16 \\ = {( {x}^{2} )}^{2} + 2 \times {x}^{2} \times 4 + {4}^{2} \\ = {( {x}^{2} + 4) }^{2}$
b option





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