Question

find the roots of 2x^2+7x+5​

Answer 1

Answer:

x = -1, -5/2

Step-by-step explanation:

2x^2+7x+5=0

2x^2+5x+2x+5=0

x(2x+5)+1(2x+5)=0

(x+1)(2x+5)=0

x+1=0, 2x+5=0

x=-1, x= -5/2

Answer 2

Answer:

x=[ -5/2. and -2]

Step-by-step explanation:

first multiply the first and last term

2×5 = 10

there product (10) is positive

it means that their middle term is spelt as addition of product

now we find any two numbers which product is 10 and their sum will be 7

these numbers are 5 and 2

2x^2+7x+5=0

2x^2+2x+5x+5=0

2x( x+2)+ 5( x+2)= 0

(2x+5) (x+2). =0

2x+5=0. or. x+2=0

2x = -5. or. x=-2

x= -5/2

hope it's helpful to you