Question

4. 8x2 + 13x + 5 = 0. factorise​

Answer 1

Answer:

x= -5/8,-1

Step-by-step explanation:

=>8x²+13x+5=0

=>8x²+8x+5x+5=0

=>8x(x+1)+5(x+1)=0

=>(8x+5)(x+1)=0

8x+5=0 x+1=0

x= -5/8 x= -1

Answer 2

= 8x^2 + (5+8)x + 5 = 0 ( 5 x 8= 40 and 5+8= 13 )
8x^2 + 5x + 8x + 5 = 0
X( 8x+5 ) + 1( 8x + 5 ) = 0
( x + 1 ) ( 8x + 5 )