Question

(a+7)^2=
(3X-4y)^2=
(m-6)(m+6)=
(5a+8b)(8b-5a)=
даю 15 балов

Answer 1

$(a + 7) {}^{2} = {a}^{2} + 14a + 49 \ (3x - 4y) {}^{2} = 9 {x}^{2} - 24xy + 16 {y}^{2}$
$(m - 6)(m + 6) = {m}^{2} - 36 \ (5a + 8b)(8b - 5a) = 64 {b}^{2} - 25 {a}^{2}$

Answer 2

1)а^2+14а+49
2)9х^2-24ху+16у^2
3)м^2-36
4)64в^2-25а^2