Math, asked by AnushriI, 11 months ago

Factorise x4square -81


AnushriI: Fast solve please

Answers

Answered by GENIUS1223
1

Answer:

Factorise this expression using the difference of squares: 

f(x) = x⁴ + x² + 1 

f(x) = (x² + 1)² - x² 

f(x) = (x² + 1 - x)(x² + 1 + x) 

f(x) = (x² - x + 1)(x² + x + 1) 

f(x) = (x² + x + 1)(x² - x + 1)

Answered by dharshini95
1
4x2-81=0
4x2=81
x2=81/4
x=9/2
hope this helps

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