Question

Factorise the following expressions.
(iv) 49x²-64
(v) x-1-2y-y²
(vi) 4(x - y)² - 12(x - y) +9
(vii) x² + y - xy - x
(viii) 81(x + 1)² + 90(x + 1)(y + 2) + 25 (y + 2)²
(ix) x²+y²+z²/4+ 2xy - yZ-2X
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Answer 1

Answer:

your answer is in step by step explanation

Step-by-step explanation:

49x^2 -64

= x^2= -64-49

=x^2= 113

=x^2=10.6301458^2

=x=10.6301458

I think now your question will be clear