Answer:
Step-by-step explanation:
Q17
For Q18 and Q19.
If ΔABC ≅ ΔSRT (congruent), then
Q20
24:6
4x²+12xy+9y²
(2x+3y)²
=(2x+3y)*(2x+3y)
2x *2x , 2x *3y , 3y* 2x ,3y* 3y
=4x²+12xy+9y²