Sahale decorated his house with three strands of party lights. The red strand blinks every 4 seconds, the green strand blinks every 6 seconds, and the white strand blinks every 10 seconds. How many seconds will go by until the three strands blink at the same time? pls can anyone answer this. PL HELP ME.

the answer is 13 cm

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

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