Question

factorise: 4x^2+25y^2+16+20xy-40y-16x​

Answer 1

★ Qᴜᴇsᴛɪᴏɴ ★

Factorise :

4x² + 25y² + 16 + 20xy - 40y - 16x

★ Sᴏʟᴜᴛɪᴏɴ ★

➳ 4x² + 25y² + 16 + 20xy - 40y - 16x

[Now, using a²+b²+c²+2ab-2bc-2ac=(a+b+c)²]

factor the expression

➳ (2x + 5y - 4)²

Answer 2

Answer:

$( 2x + 5y + 4) ^{2}$