Question

(5) p² - 2p - 35
Factorise it
​

Answer 1

Answer:

p^2-2p-35=0

p^2- (7-5)p-35=0

p^2-7p+5p-35=0

p(p-7)+5(p-7)=0

(p-7)(p+5)=0

p-7=0. p+5=0

p=7. p=-5

Answer 2

Answer:

p= 2.853 or (-2.453)

Step-by-step explanation:

5p²-2p-35

comparing above equation with ax²+bx+c

and x=( -b ± √b²-4ac)/2a

We get,

p= [-(-2)±√(-2)²- 4(5)(-35)] /2(5)

=[ 2 ± √4+700] /10

=[ 2 ±√704]/10

=[ 2 ± 26.53]/10

=[ 2 + 26.53]/10. OR =[ 2 - 26.53]/10

=[ 28.53]/10. OR =[- 24.53]/10

= 2.853. OR = (- 2.453)