Respuesta :

21q^2 bc (7x21) x (q x q)
tanweeleong195oxyqwp

[tex]21 {q}^{2} [/tex]

Step-by-step explanation:

[tex]3 \times 7 \times q \times q = \\ 21 \times q \times q = \\ 21q {}^{2} [/tex]