The quadratic equation x2 + 4x – 7 = 0 has
(1) Real and equal roots
(2) Real and unequal roots
(3) No real roots
(4) No roots at all
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Answer:
(2) Real and unequal roots
Step-by-step explanation:
D = b² - 4ac
= 4² - 4 x -7 x 1
= 16 + 28
= 12
D > 0 there fore real and distinct roots..
hope this helps you dear..
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