Question

$x {}^{2} - 3x - 40$
I don't know the formula
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Answer 1

Answer:

hey bro jeres the answer hope ot helps:)

Step-by-step explanation:

Consider the form

x

2

+

b

x

+

c

. Find a pair of integers whose product is

c

and whose sum is

b

. In this case, whose product is

−

40

and whose sum is

−

3

.

−

8

,

5

Write the factored form using these integers.

(

x

−

8

)

(

x

+

5

)

ask of u need more help

(i made a little mistake in typing so hehe)

Answer 2

Answer:

$x { }^{2} - 3x </u></em></strong><strong><em><u>-</u></em></strong><strong><em><u>40 = 0$

${x }^{2} -8x + 5x </u></em></strong><strong><em><u>-</u></em></strong><strong><em><u> 40 = 0$

x(x-8)+5(x-8)=0

(x+5)(x-8)=0

(x+5)=0,(x-8)=0

x=-5,x=8 .answer