Question

Std 10th SSC Board .
Lesson name : Quadratic equation
Answer please.​

Answer 1

Answer:

15

Step-by-step explanation:

No.of trees in row=(x+5)

x(x+5)=150 ...(total No. of trees)

x²+5x-150=0 ...(Quadratic equation)

x²+15x-10x-150=0

x(x+15)-10(x+15)=0

(x+15)(x-10)=0

x+15=0 (or) x-10=0

x= -15 (or) x=10

No. cannot be negative

Hence,

x≠-15 x=10

therefore,no. of trees in a row is (x+5)=15