Question

guys plz factorise it plz.....i will mark u as brainliest ​

Answer 1

★ GIVEn ★

ab² + (a - 1)b - 1

Factories it

★ SOLUTIOn ★

→ ab² + (a - 1)b - 1

→ ab² + ab - b - 1

→ ab(b + 1) - 1(b + 1)

→ (b + 1)(ab - 1)

★ SOMe IDENTITIEs ★

• (a + b)² = a² + b² + 2ab
• (a - b)² = a² + b² - 2ab
• a² - b² = (a + b)(a - b)
• a³ - b³ = (a - b)(a² + ab + b²)
• a³ + b³ = (a + b)(a² - ab + b²)
• (a - b)³ = a³ + b³ + 3ab(a + b)
• (a + b)³ = a³ - b³ - 3ab(a - b)