Question

determine the given value if x is a solution for given equation or not (2x+3) (3x-2) for x=3

Answer 1

a + b = 7

a= 7 - b

ab = 10

(7-b)b = 10

7b - b² = 10

b² - 7b + 10 = 0

b² - 5b - 2b + 10 = 0

b( b - 5 ) - 2(b-5) = 0

b = 2 , b = 5

when b = 2 , a = 5

therefore , a - b = 5 -2 = 3

and when b = 5 , a = 2

a- b = 2-5 = -3

Answer 2

determine the given value

(2x+3)(3x-2)

put the value of x is equal to 3

(2×3+3)×(3×3-2)

(6+3)×(9-2)

9×7

63