Question

3) Find the value of expression 9a - 14b for a = 3, b = 2.
4) Find the value of ( 23 )2.
5) Name any two figures that have both line symmetry and rotatio
symmetry.
Section-B
3 Marks each
Construct an equilateral triangle with side 65 cm​

Answer 1

Answer:

simplify (2a+3b)^3-(2a-3b)^3Correct option is

D

both a and b

⇒  The two numbers are a and b

According to the question,

⇒  a+b=15      

⇒  a=15−b    ---- ( 1 )

⇒  a1+b1=103

⇒  15−b1+b1=103

⇒  b(15−b)b+15−b=103

⇒  150=3b(15−b)

⇒  50=b(15−b)

⇒  50=15b−b2

⇒  b2−15b+50=0

⇒  b2−10b−5b+50=0

⇒  b(b−10)−5(b−10)=0

⇒  (b−10)(b−5)=0

Answer 2

Answer:

नूरजहां का बचपन का नाम क्या था ??

Step-by-step explanation:

follow and mark as a brainlist too