Question

Ayuda porfa. IDENTIDADES NOTABLES (x+3)^5 (y-7)^3

Answer 1

$(x+3)^{5}= x^{5}+5 x^{4}.3+10 x^{3}. 3^{2}+10 x^{2}.3^{3}+5x. 3^{4}+ 3^{5}$

= $x^{5}+5 x^{4}.3+10 x^{3}.9+10 x^{2}.27+5x.81+243$

=$x^{5}+15 x^{4}+90 x^{3}+270 x^{2} +405x+243$

$(y-7)^{3}= y^{3}-3 y^{2}.7+3y. 7^{2}- 7^{3}$

= $y^{3}-21 y^{2}+147y-343$