(m+3)^2-(m-9)(m+9) при m=-0,5

Question

(m+3)^2-(m-9)(m+9) при m=-0,5

Answer 1

(m+3)²-(m-9)(m+9) = m²+6m+9-(m²-81) = m²+6m+9-m²+81 = 6m+90

m=-0.5. 6*(-0.5)+90=87

Comments

Спасибки бро

---

да без проблем)