Question

Multiply:-
(iv) (4x - 5y) (5x - 4y)
(v) (3y + 4z) (3y - 4z) + (2y + 72) (y + z)


please guys solve this.
n useless ans. will be reported.
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Answer 1

Answer:

The set of equations 2x+3y+4z=0, 3x+4y+6z=0, 4x+5y+8z=0

A .

Infinite solutions

B .

is inconsistent

C .

has unique solution

D .

has two solutions

December 30, 2019Yashaswini Prem

ANSWER

Given, 2x+3y+4z=0,3x+4y+6z=0,4x+5y+8z−0

∴Δ=∣∣∣∣∣∣∣∣234345468∣∣∣∣∣∣∣∣

=4−4=0

∴Δ=0 so infinite solutions

Answer 2

Answer:

Answer is here

Step-by-step explanation:

hope it helps u

answer 1 =20x²-41xy+20y²

answer 2=11y²-1764+2yz+72y+72z