To use the hl theorem to prove two triangles are congruent, the triangles must be right triangles. which other conditions must also be met? . a. the triangles have congruent hypotenuses and two pairs of congruent legs. b. the triangles have congruent hypotenuses and one pair of congruent legs. c. the triangles have two pairs of congruent legs. d. the triangles have congruent hypotenuses .

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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step-by-step explanation: