alleryStart learning →Which has NO factorisation (x+m)(x+n) with integers m,n?
Ax²+2x+1
Bx²−x−2
Cx²−1
Dx²+x+1
Answer & Solution
Correct answer: D. x²+x+1
For x² + x + 1, integer constants would need product 1 and sum 1, but the possible integer pairs give sum 2 or −2.
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