Iknow this isn't math but.. which sounds better, ''his vision grew weaker,'' or ''his vision got weaker,''?

a; x = 0.5

step-by-step explanation:

-10x = -5

x = 0.5

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x

6+6=12 so that just tells you what it is one half is 6 the next one is 6