Solve 2x+5=3(x+2) for x.
2x+5=3(x+2) ⇒2x+5=3x+6 ⇒2x−3x=6−5 ⇒−x=1 ⇒x=−1 So, the value of x is −1.
The polynomial equation P(x)= 3x2+5x+2 can be represented as
Question 13
The equation having -3 as the solution is
(a) x + 3 = 1
(b) 8 + 2x = 3
(c) 10 + 3x = 1
(d) 2x + 1 = 3