move the -7 over:
7x^2 - 10x + 13 = 0
using the quadratic formula,
x = (10 +/- sqrt(100-364))/14
= (5 +/- sqrt(66) i)/7
solve for X
-7=7x^2-10x+6
2 answers
Write the arithmetic sequence 16,20,24,28,in the standard form:
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