factorise a^2+1/a^2-18
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Answered by
1
Answer:
a^19
Step-by-step explanation:
= a^2+1/a^2-18
= a^2×a^1/a^2×a^-18
now, a^2 can cancel each other
therefore,
=a^1/a^-18
=a^1×a^18
=a^19
Answered by
0
Answer: [assume a as x]
x²+9x+18=0
x²+3x+6x+18=0
x(x+3)+6(x+3)=0
(x+6)(x+3)=0
Hence, factors of x are = -6 and -3
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