Question

factorise
49x^2+y^2+4z^2+14xy-4yz-28zk​

Answer 1

Answer:

49x²+y²+4z²+14xy-4yz-28zk

$\ \implies$(7x+y+2z)²

Step-by-step explanation:

is the answer of this question

Answer 2

HERE IS UR ANSWER DEAR,

=49x² + y² + 4z² + 14xy.-4yz -28zx

= (7x)² + (y)² + (2z)² + 2(7x)(y) +2(y)(-2z)+ 2(7x)(-2z)

it is in the form of

(a+b+c)² = a²+b²+c² +2ab+2bc+2ac

by comparing

• a= 7x
• b= y
• c= - 2z

therefore ,

= (7x +y-2z)²