Question

Pls help

pls show handwritten work
with full explanation
thank you
and this is factorise​

Answer 1

`\huge{ \mathfrak{  \underline{ Answer} \:  \:  ✓ }}`

Question 1 :

`\small(a {}^(2) b {}^(2) + 1 + ab - c)(a {}^(2) {b}^(2) + 1 - ab + c)`

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`\small a⁴b⁴ + 1 + a²b² - c² + 2abc`

`\small( a⁴b⁴+ 1 ) + a²b² - c² + 2abc`

`\small[ (a²b²)² + 1² ] + a²b² - c² + 2abc`

`\small(a²b² + 1 + 2a²b² - 2a²b²) + a²b² - c² + 2abc`

`\small(a²b² + 1)² - 2a²b² + a²b² - c² + 2abc`

`\small(a²b² + 1)² - a²b² - c² + 2abc`

`\small(a²b² + 1)² - (a²b² + c² - 2abc)`

`\small(a²b² + 1)² - (ab - c)²`

`\small(a²b² + 1 + ab - c) (a²b² + 1 - ab + c)`

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`\mathrm{ ☠ \: TeeNForeveR \:☠ }`

Answer 2

This may help you

look it once.