factorise:7x²+2√14x+2
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Answer:
7x^2+(2√14)x+12=0
D=√(b^2)-4ac
D=√(2√14)^2-4*7*2
D=√56-56
D=o
X=-b+-D/2
X=(-2√14)/2
Step-by-step explanation:
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