Which of the following are in form of different squares. NEED HELP PLEASE HURRY!!

Step-by-step explanation:

The fourth is a sum (+) not difference (-).

All others are some form of difference of squares:

difference of square of number 13x² and square of number 7

difference of square of number 6 and square of number 5b

difference of square of number 10 and square of number r

difference of square of number 8y and square of number 9

i understand 100% 10/10 hit or miss?

step-by-step explanation:

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.