X = root 2 b) x2 - root 2x - 4 = 0
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hi mate,
solution:
given: x = √2
The given equation is :
→x² + √2 x - 4 =0
By splitting the middle term,we can write the equation as
→ x² + 2 √2 x - √2 x - 4=0
→ x² + 2 √2 x - √2 x - 2√2×√2 =0
→ x ( x + 2 √2 ) - √2 (x + 2√2) = 0
→ (x - √2) (x + 2 √2) = 0
→ x - √2 =0 and x + 2√2=0
→ x= √2 and x = - 2 √2 , are solution of the equation.
i hope it helps you.
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