Question

can you solve this fast plz​

Answer 1

Answer:

-7x^2+9xy-9 is the answer

Step-by-step explanation:

f . o l l o w m e

Answer 2

$\huge{\underline{\underline{\bf QueStion}}}$

• what should be added to $\sf 4x²-5xy+7$ to get $\sf -3x²+4xy-5$ ?

$\huge{\underline{\underline{\bf Solution}}}$

• let the required no. be (a)

$\implies$ $\sf 4x²-5xy+7 + a = -3x²+4xy-5$

$\implies$ $\sf a = -3x²+4xy-5-(4x²-5xy+7)$

$\implies$ $\sf a = -3x²+4xy-5-4x²+5xy-7$

$\implies$ $\sf a = -7x²+9xy-12$

hence, the required no. is :-

$\longrightarrow$ $\underline\green{\boxed{\sf -7x²+9xy-12}}$