Pls help 25h²- 16t² factorise it
2 answers:
Answer:
(5h-4t)(5h+4t)
Step-by-step explanation:
25h² - 16t²
adding and subtracting 20ht from it (√25 and √16 = 5x4 = 20):
25h² + 20ht - 20ht -16t²
factor:
(5h-4t)(5h+4t)
Answer:
(5h - 4t)(5h + 4t)
Step-by-step explanation:
25 h² - 16t² ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b)
Then
25h² - 16t²
= (5h)² - (4t)²
= (5h - 4t)(5h + 4t) ← in factored form
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