Question

Q.2 Guess and write the measurement. 1. Your height: cm. m. 2. Length of your classroom 3. Length of Mathematics' textbook m cm. 4. Width of mobile phone cm. 5. Height of your classroom m.​

Answer 1

Answer:

x−4)(x+5)

=x(x+5)−4(x+5)

=x2+5x−4x−20

=x2+x−20