Question

PLEASE HELP ME IN THIS QUESTION.​

Answer 1

Answer:

hello ARMY

Step-by-step explanation:

a) ans: p=10 and q= 7

b) ans: x= 2 y= 5 and z = 13

Answer 2

Answer:

$(3p +4q)^2 - 8q (3p + 4q) +16q^2\\= 3p^2 + 4q^2 - 8q (3p) + -8q (4q) +16q^2\\= 3p^2 + 4q^2 - 24qp + -32q^2 +16q^2\\= 3p^2 + 4q^2 - 24qp -32q^2+16q^2\\= 3p^2 + 4q^2 -32q^2+16q^2 - 24qp \\= 3p^2 - 12q^2 - 24pq$

$(2x +y +z)^2 - 2(2x +y+z) (y-z) +(y-z)^2\\= (2x +y +z)^2 - (4x +2y+2z) (y-z) +(y-z)^2\\= (2x^2 + y^2 +z^2) - 4x(y-z) +2y(y-z)+2z(y-z) +(y^2 - z^2)\\= 2x^2 + y^2 +z^2 - 4xy-4xz +2y^2-2yz+2yz-2z^2 +y^2 - z^2\\= 2x^2 +2y^2+y^2 +y^2 -2z^2 - z^2 +z^2 - 4xy-4xz -2yz+2yz\\= 2x^2 + 4y^2 + -2z^2 - 4xy-4xz \\= 2x^2 + 4y^2 + -2z^2 - 4xy-4xz\\= 2x^2 + 4y^2 -2z^2 - 4xy-4xz$

HOPE THIS HELPS